I was downloading some stuff off clearwire last night, and i returned this morning, and everything i had downloaded had deleted it self!!

What happened?

You sure stuff you had already downloaded or simply files you were still downloading. For example, in settings you can change days to keep incomplete files from the default 7 days to 9999 days if you wish. Under Tools > Options > Saving.
BTW it's LimeWire not ClearWire. If your program is called that then you must have bought a scam version.

For fast & easy access, go to your LW Library window, select Saved Files folder & press the Explore button. Sample image here: Using Library Explore button to access downld folder (click on link) & the folder will open up for you.

*slaps face* Oops, thinking of my ISP...:P

No, but they were downloaded, though....

Yes I know of that ISP.
Use the Explore button on Saved file folder in Library window & see if you find anything. Else see http://www.gnutellaforums.com/window...downloads.html

My only other thought is you may have downloaded a virus or something. WARNING: Viruses on network you should be aware of! (click on blue link)

Oh unless someone, perhaps someone else came along & interfered. Such as clicking the clear all inactive files, which would still have incomplete files in the incomplete folder. In which case you can resume them from there.