As mentioned – Windows 7 and Windows 2008 R2 hotfixes that normally are necessary to be included in a deployment.
981070 “Windows can’t open Add Printer” error in a 64-bit version of Win7 or of Windows Server 2008 R2 http://support.microsoft.com/kb/981070
981619 A hotfix is available that improves the performance of CLR when a .NET Framework 3.5 SP1-based application runs in a virtualized environment http://support.microsoft.com/kb/981619
2028551 An update is available that contains improvements to XPS in Windows 7 or in Windows Server 2008 R2 http://support.microsoft.com/kb/2028551
2454826 A performance and functionality update is available for Windows 7 and for Windows Server 2008 R2 http://support.microsoft.com/kb/2454826/en-us
2465772 An application or service that uses Winsock API or Winsock Kernel API may randomly stop responding in Windows Server 2008 R2 or in Windows 7 http://support.microsoft.com/kb/2465772
2465990 “0x80041002 (WBEM_E_NOT_FOUND)” error occurs when you try to open a WMI namespace on a computer that is running Windows 7 or Windows Server 2008 R2 http://support.microsoft.com/kb/2465990
2481614 Windows 7 may connect to a guest network instead of a corporate network http://support.microsoft.com/kb/2481614
2490742 A “0x000000B8” Stop error occurs when you try to shut down or hibernate a computer that is running Windows 7 or Windows Server 2008 R2 http://support.microsoft.com/kb/2490742
2505348 High CPU usage or a lengthy startup process occurs during WMI repository verification when a large WMI repository exists in Windows 7 or in Windows Server 2008 R2 http://support.microsoft.com/kb/2505348
2510636 An update that improves the startup performance of Windows 7 and of Windows Server 2008 R2 is available http://support.microsoft.com/kb/2510636
2511290 A computer that is running Windows 7, Windows Vista, Windows Server 2008 or Windows Server 2008 R2 continues to use the original printer driver after you update or replace the printer driver http://support.microsoft.com/kb/2511290
2511305 Network throughput is not scaled up correctly if high-bandwidth PCI Express adapters and four or more processor sockets are used in Windows Server 2008 R2 http://support.microsoft.com/kb/2511305
2516405 “0x00000050” Stop error occurs when you run an application that uses the RegSetValueEx function on a computer that is running Windows 7 or Windows Server 2008 R2 http://support.microsoft.com/kb/2516405
2519740 The WWAN service may crash after you resume a Windows 7-based computer from S3 sleep http://support.microsoft.com/kb/2519740
2524478 The network location profile changes from “Domain” to “Public” in Windows 7 or in Windows Server 2008 R2 http://support.microsoft.com/kb/2524478
2525246 “0x0000003B” Stop error when you remotely control a Remote Desktop session in Windows Server 2008 R2 http://support.microsoft.com/kb/2525246
2525332 You encounter a long logon time after you enable the “Do not automatically make redirected folders available offline” Group Policy setting in Windows 7 or in Windows Server 2008 R2 http://support.microsoft.com/kb/2525332
2525949 Visual artifacts occur when more than 1,000 controls are drawn in the same container in Windows 7 or Windows Server 2008 R2 http://support.microsoft.com/kb/2525949
2526028 Printing performance decreases in Windows 7 or in Windows Server 2008 R2 http://support.microsoft.com/kb/2526028
2526870 Windows Vista, Windows Server 2008, Windows 7, or Windows Server 2008 R2 may stop responding at the Welcome screen after you enter the user credentials to log on to the computer http://support.microsoft.com/kb/2526870
2526946 An SSO solution that calls the LsaLogonUser function to pass a KERB_TICKET_LOGON structure for Kerberos authentication does not work in Windows 7 SP1 or in Windows Server 2008 R2 SP1 http://support.microsoft.com/kb/2526946
2528507 Incorrect memory dump files in an x64-based version of Windows 7 SP1 or of Windows Server 2008 R2 SP1 http://support.microsoft.com/kb/2528507
2534356 Some CPU cores are parked while other active CPU cores have a heavy workload in Windows Server 2008 R2 http://support.microsoft.com/kb/2534356
2546651 Print driver installation does not work in Windows 7 or in Windows Server 2008 R2 when you try to install the HP Universal Print Driver in a Novell network environment http://support.microsoft.com/kb/2546651
2547244 The WMI service and the WMI providers stop responding when you use WMI performance classes to monitor performance on a computer that is running Windows 7 or Windows Server 2008 R2 http://support.microsoft.com/kb/2547244
2549657 The EnumPrinterDataEx function causes pool corruption in the printer spooler service in Windows 7 or in Windows Server 2008 R2 http://support.microsoft.com/kb/2549657
2549661 Connectivity problems for an Outlook client to an Exchange Server in a server farm through an RPC-over-HTTP connection http://support.microsoft.com/kb/2549661
2552343 Time-out error occurs when you install a Windows Update package that contains drivers on a computer that is running Windows 7 or Windows Server 2008 R2 http://support.microsoft.com/kb/2552343
2492536 Msinfo32.exe takes a long time to display or export system information on a computer that has many MSI-X-supported devices and that is running Windows 7 or Windows Server 2008 R2 http://support.microsoft.com/default.aspx?scid=kb;en-US;2492536
2578214 An application crashes when it tries to retrieve file information from an invalid or corrupted file in Windows Vista, in Windows Server 2008, in Windows 7 or in Windows Server 2008 R2 http://support.microsoft.com/kb/2578214/
2564236 I/O throughput is low when large files are read sequentially in Windows 7 or in Windows Server 2008 R2 http://support.microsoft.com/kb/2564236/
2561708 Offline files synchronization may not finish on a computer that is running Windows 7 or Windows Server 2008 R2 http://support.microsoft.com/kb/2561708/
2578159 The logon process stops responding in Windows Server 2008 R2 or in Windows 7 http://support.microsoft.com/kb/2578159/
2551503 A mapped drive that has the non-persistent flag set is displayed as a disconnected drive in Windows 7 or in Windows Server 2008 R2 http://support.microsoft.com/kb/2551503/
2561285 You experience a long domain logon time in Windows 7 or in Windows Server 2008 R2 after you deploy Group Policy preferences to the computer http://support.microsoft.com/kb/2561285/
2550581 When you try to access files on a network share, Windows Explorer stops responding on a computer that is running Windows 7 http://support.microsoft.com/kb/2550581/
2566191 Windows 7 or Windows Server 2008 R2 reports memory incorrectly on a computer that is running a chipset that has an integrated GPU http://support.microsoft.com/kb/2566191/
2617858 Unexpectedly slow startup or logon process in Windows Server 2008 R2 or in Windows 7 http://support.microsoft.com/kb/2617858/
2617157 Windows 7 or Windows Server 2008 R2 crashes if a command prompt or a PowerShell console is opened and closed many times http://support.microsoft.com/kb/2617157/
2600484 Certain user folders are absent from the user profile in Windows 7 or in Windows Server 2008 R2 if the folders are excluded from the roaming profile http://support.microsoft.com/kb/2600484/
2585233 “Stop 0x000000AB (SESSION_HAS_VALID_POOL_ON_EXIT)” error when a client logs off from a Windows Server 2008 R2 Remote Desktop Services session http://support.microsoft.com/kb/2585233
2583905 Slow performance when you copy more than 10 gigabytes of data to a Blu-ray disk in Windows 7 or in Windows Server 2008 R2 http://support.microsoft.com/kb/2583905/
2582203 A process that is being terminated stops responding in Windows 7 or in Windows Server 2008 R2 http://support.microsoft.com/kb/2582203
2590550 The desktop does not load and only displays a black or blue background after you log on to a computer that is running Windows 7 or Windows Server 2008 R2 http://support.microsoft.com/kb/2590550
2598526 Client computers do not obtain an IP address when they request a DHCP lease from a Windows Server 2008 R2-based DHCP server http://support.microsoft.com/kb/2598526/
2614066 Black screen during a Remote Assistance session in Windows Vista, in Windows Server 2008, in Windows 7, or in Windows Server 2008 R2 http://support.microsoft.com/kb/2614066/
2612966 Paged pool memory leak when you access some shared files in Windows 7 or in Windows Server 2008 R2 http://support.microsoft.com/kb/2612966/
2620656 Invalid redirected printers may be available in a Remote Desktop Services session that connects to a RD Session Host server that is running Windows Server 2008 R2 http://support.microsoft.com/kb/2620656/
2530309 Internet Explorer Group Policy Preferences do not apply to Internet Explorer 9 in a Windows Server 2008 R2 domain environment http://support.microsoft.com/kb/2530309/