jeffsic,

1. Page 68 of the manual shows you how to erase multiple photos, but there is no way to delete all the photos off the thumb-drive all at once.

2. A portable USB drive may work with Fat32/Fat16 formatting, but only if it's an MSC (mass storage class) drive. The manual also lists some requirements to use an MSC drive that might be helpful to review. Since I can't see the drive or the stats, it's hard to determine why that specific drive might not work. Are the files buried in folders? That may be an issue.

3. C|Net is a great source of information for the PC Sharing and DLNA involvment.

--HDTech