leftover files from Windows update

When I found a folder feb890il9089876 or something like that in L:, thought I had been hit by a virus. But found inside the folder an i386 and an AMD64 folder, and looking at the inf file MSXPSDRV.INF and googling, found that this was a leftover from dotNET framework 3.5 update. Was able to delete with no issues since I have only one login on this machine. Or maybe it was because this was an ext2 drive and not NTFS or FAT32.