I sorta look after a Windows XP Home machine at church. This by way of looking after the song lyrics in the projection software.
It was lacking a major update a few weeks ago - specifically, SP3. Seing as so many people use it and it's not completely locked down, and other stuff gets installed from time to time, it needs to be up-to-date; so I let it install SP3. SP3 updates something in the USB subsystem that HID things now crash it hard. Flash drives are, apparantly, okay, but the USB mouse is not, and neither is the Targus presenter. :-/ Both produce a blue screen, requiring a hard reboot. Google wasn't helpful; neither was Windows TechNet.
I wish I could have moved it to Linux a long time ago, but that is Difficult. The first problem was that OpenOffice is not enough of a replacement for PowerPoint (I was using a feature for all the songword files that PowerPoint has that OpenOffice does not). The second problem was that other software has been installed over time and we are kinda relying on it. ITunes springs to mind, but there are others. The third problem is that the senior paster did his own exploration of presenter software and chose one that is not available for Linux, nor even for Mac. In fact, due to the reliance on a number of Windows-isms, it is unlikely to be considered to be ported. :-/ He knows my complaint about that and had to admit to making that decision for good or ill. My solution is to do what I can do, and bat more difficult problems back to the ministry team to find (i.e pay) someone to solve. Like that USB problem.
[rant off]
Wade.