OK, after some digging, I've found the IP of the intruder that did this. It was someone from the UK it seems. To be precise:
Fri May 7 15:41:53 2004 0 host213-122-59-207.in-addr.btopenworld.com
Now to check the forum logs to see if anyone uses that IP! And if not, well, must be a random hacker!
