I am receiving the following message when trying to connect. Any suggestions

-acool.ga.us.dal.net- *** Network-Banned for [exp/turkbot] Exploited host, go to http://kline.dal.net/exploits/akills.htm [AKILL ID: OS21062387320-100] (2003/08/31 23.35)

I have a virus recently and was cleaned,, could that be it?

Have you visited the website in the kill reason?

When you get killed with the reason that you are a trojan/exploit/warbot or similar there is two possibilities:

1. Your ISP was providing many of the hostile connections and was then blanket-banned to make life easy for Dalnet.
2. Your connection details match the connection details of a hostile connection and therefore was banned on sight.

Any suggestions on how to fix the problem? [exp/turkbot]

The turkbot would indicate that your script is banned from the network. Delete it and get one that isn't so lame, isn't spamming or abusing users, etc.