If you have been using Remote Desktop Services (RDS) 2008 R2 or a RDP session to Windows 7 (although I've seen it less in Win7) you must be familiar with case:
You open up a RDP session to a Windows Server 2008 R2 RDS server, open up for example outlto ook 2010 and you find that the icon for PowerPoint now appears on the task bar! This issue was inconsistent, sometimes it showed up sometimes it didn’t.
Microsoft has released a fix for this issue last week, here it is:
According to Micrsoft this issue occurs because of a timing issue in the Shell32.dll module.