From the ModSquad front page:
Unfortunately I can't offer storage space and bandwidth to you.
Shutting down ModSquad would be a real loss for the community. Please don't, even if you can't host mod and mutator downloads yourself anymore---the reviews are what I'm visiting ModSquad for, not the downloads.Fileplanet doesn't seem to be working properly, so I'm still looking for FTP space. I think I found another server, but if it doesn't work properly, I'm giving up. If it doesn't work, I'm planning to shut down Mod Squad. Sorry for maing this so sudden, but trying to fix this massive problem is extremely time consuming. You'll find out later today what my decision is.
Unfortunately I can't offer storage space and bandwidth to you.