Tue 19 Jan 2010
According to Lifehacker, if you are using a solid colour background in Windows 7 instead of a custom wallpaper your login could be delayed for 30 seconds. The bug, which affects both Windows 7 and Windows Server 2008 R2, causes the Welcome screen to be displayed for 30 second during the logon process.
The easiest way to solve this problem is to set an image file as your desktop background, but there is also a hotfix available for download from Microsoft. To visit the Microsoft website and read more about this issue click here.