Hi - I am running XP pro, I recently installed Norton Antivirus 2006 now my DVD, CD writer, Floppy, Zip, and USB drives don't recognise media and asks to format or install media. I have had a look at the device manager and all the drives are working properly. The drives were working last week. I think windows downloaded and installed a few critical update - Norton turned on automatic update rather than download and ask to install. I think it's a system software problem, can anyone help me with a solution?