Unfortunately, there is still a registry "call" remaining from the previous malware. As such, it needs to be fixed. Click on the link below and follow the instructions to the letter, in the order they're given. It should find any other remnants that Hitman missed. Running all the scans listed will take quite a while so don't be surprised if it takes a few hours.

“Expand” the post titled: "Please try this" at the link below:
http://www.cnet.com/forums/post/f742c795-5881-433b-a29b-6d758efe5cd3/

Hope this helps.

Grif