You could always manually kill them in cPanel?
There should be an option in your FTP client about this, it's opening a new connection for everything you do.
~Callum
If you feel like it, you can read some other posts in this forum. All saying the same thing.
http://x10hosting.com/forums/free-hosting/136209-getting-hosting-account-signup-failure-read.html
~Callum