noob question- what do the red "x" next to torrents mean

[bazop]

Hello- noob here- I looked thru the FAQ's- took the plunge and created a static IP address, did the port forwarding, and the speeds went up. But now all my torrents get a red "x" next to them- I don't know if its a coincidence or not- I can't find a definition of what the x means or what to do about it. Thanks.

[kluelos]

It means that BitComet can't write to the disk. Usually that's a permissions problem, though it can also indicate that the disk is full, or failing, or there's something wrong with the default pathname -- anything that might prevent it from writing to disk.