A theory I have is that it might not be the amount of space available but possibly the number of files. I have MapTool Pro installed with the entire set of pngs for All of Italy and All of Minnesota cached.
Which includes 947 Megs and totals 29,441 files and 597 directories.
Since it takes FORever to download them, i want to try not to delete them.
Update: My entire USB partition stats:
93,514 Files in 5,635 Folders Approx: 21.4GB
Update 2: Preware says I have 165 Apps, 8 Linux Apps, 1 Linux Daemon, 9 Patches (none of which have been reinstalled yet), 2 Services, and 9 Unknowns.