First (~4 weeks ago) I noticed all the subfolders (only) gone from c:\My documents\folder1\subfoldera, b, c,etc... Individual files (mixed types; e.g. word, excel, jpg, etc...) in the folder however, were still in place.
Now I have noticed another set has disapperred. This time from c:\My documents\My Pictures\a, b, c, etc... (I do not believe they disappeared at the same time, but cannot say for sure.)
I am virus free (NAV 2004 with all updates), inside a NAT router with ZoneAlarmPro running also... The 1st set were in no way recoverable, Norton UnErase cannot find ant JPG's to recover this time... I have not dared install any lost file recovery utility (again) to lok for the pictures. Norton
(BTW after old tapes provided inadequate b/u the first time I moved to DVD b/u but folders are not there also so may have dissppeared w/ the first set.)