I ran Natty for a while, then switched to Maverick. Once I was on Maverick, I set up Ubuntu One and synced all of my school files. No problem so far.
Then I had to wipe my HD and install Windows, since I had a critical project due that I couldn't figure out how to do in Ubuntu (I would have run a VM, but I couldn't get it to work for some reason).
Now I log into Ubuntu One from my Windows 7 machine, and all of my files are gone!! These are my school files, guys, including a term paper that's due in not long at all.
Please please PLEASE tell me they're not gone forever!!