Basically I blocked some IPs from accessing the site because they were using an extraordinary amount of bandwidth. This wasn't based on the forum, or users in any way, just a faceless list of IP addresses in the server stats.
In the past this has always been bots, but twice now it has been you. I'm not really sure why your IP is hitting the site so hard but I guess someone trying to hack your account is definitely related. I'd appreciate you changing your password yeah and also scanning your PC for viruses etc..