Did it "disconnect" you after you had been using it a while, or did it "refuse" the connection? If it refused the connection, (allowed a connect, but not a login) check your config files for sshd. If it refused the connection, (as in couldn't connect at all) check your portsentry.history and see if you maybe forgot to add yourself to portsentry.ignore (assuming you are using portsentry.) If you still think you may have gotten hacked, check out chkrootkit
It will look for commonly installed root kits. If it finds one, I suggest you reinstall instead of trying to remove everything. Good luck
Happy Hacking
