The problem is that some program is still using those dll files. It's actually rather stupid of Windows, if you ask me, because technically nobody is using the file itself and it's already been loaded into memory. But it's just one of those things, Windows still won't let you delete it.It is a little odd that it's libgcc though... gcc is the most common compiler in Linux environments, but usually even cross-compiling for Windows people use MingW. Which is actually just a gcc for Windows, when all is said and done... but the libs are usually named mingw, not gcc. Huh. Well whatever, just caught my eye is all.To un-write-protect a file, just right-click it, select "Properties," and un-check the "read-only" box. If it isn't checked, you're positive Vidalia isn't running (see ChemCat's post about the task manager), and the stuff STILL won't delete... well, try a reboot and then deleting them again.