I'm not saying there is on your server, but some webhosts limit the number of allowed files, and that sometimes causes Out of Space errors, IIRC.
Good luck with the file system problem, and see how it behaves after that. If you are still having Accelerator errors after the file system is fixed, c'mon back and we'll work on them or have you go to a support ticket <img src="https://www.ubbcentral.com/boards/images/graemlins/smile.gif" alt="" />
