My system: AMD 3200+, 1 GB, 3 hard drives, CD-ROM, DVD+|-RW, XP Home w/ SP2. The CD and DVD drives are on an add-in IDE card. When I plug in a USB flash drive, the icon for safely removing it appears in the system tray but no pop-up balloon appears announcing the addition of the flash drive. However, applications don't acknowledge that the drive is present, even My Computer. I can go to a command prompt and access the drive. It's as if Windows is "half recognizing" that the drive is present. I've identified two possible problems: 1) The BIOS for the add-in card is never loaded on booting because there are no hard drives attached to the card and this somehow affects things. 2) Something is messed up with the XP installation. I've never seen this problem on any other system.