Someone is posting on my blog as me – is my account hacked?

I changed the username and password. Today the hacker posted as me again!

I don’t know what to do??? I’ve changed ny Cpanel password as well. Maybe the hacker has installed some software on my server that lets him do this?

Can someone help?

nhowarth – thanks for trying to help. The problem is more serious when someone is actually writing posts as you compared with someone just posting comments as someone else.