To add to my situation... It seems like my system has taken a decent sized hit to load/cpu usage as well. You can clearly see where the shoutbox was updated yesterday... The box has no change, it's still running very slow and making you refresh to see chats a lot of the time. *shrug*
You can see the jump where it was installed... Then the down I think is where I shut the forum off and reuploaded all the files and such, then back up when I turned it back on.
Thanks,
Andrew