I'm wondering though whether it's a permission-based setting ... i.e. we can do it b/c we have moderator privileges. Incidentally, I fixed tux4life's problem with his homepage in the meantime :) Read More
My ISP places a limit on the size of an upload. Could yours be doing that?
Yes, but there's no such thing as: a file may be only xxxxMB or so.
There's something like a counter for all the traffic (upload and download), in other words: I'm allowed to upload files from any size unless I have reached the upper bound of my counter :)
(The counter's limit is 25GB and will be reset to zero every month)