During a recent SQL Server install, I noticed that a few files had been accumulating on my hard drive deep in the bowels of my SQL Server folder.
In the Program Files\Microsoft SQL Server\90\Shared\ErrorDumps folder there are a bunch of *.mdmp files. These are Windows XP trouble reports. Unless you are attempting to trouble shoot your machine or install, you might consider removing these.
The other file type that accumulates on your disks is setup bootstrap files. These are logs of setup that aren't removed when you uninstall SQL Server. They're found in the Program Files\Microsoft SQL Server\90\Setup Bootstrap\LOG\Files folder. You should only be accumulating these if you're doing multiple uninstall/install cycles. It's also helpful to know where these are if you ever need to file a bug against SQL Setup. They'll want these logs.Again, unless you're troubleshooting your setup, these may safely be removed.
Universe.Earth.Software.Microsoft.SQLServer.IS.KirkHaselden