I took a look at the forum and I couldn't see any sign of intrusion.
Just in case, I purchased a new server in a new datacenter with a brand new operating system, did a clean install of all the forum files, and only ported over the database entries. If any malware could have existed before, it can't now.
Let me know if you're still seeing problems. If you still are, I would highly recommend you check for malware on your computer.
- celbel likes this