Further problems caused by the TT bot (among others) with a forum login system.
http://www.simplemachines.org/commun...topic=416928.0
Some of the IPs noted there are those used by the TT bot. It appears the poster is not actually aware of the TT scanner bot so this is fairly unbiased evidence from someone with no axe to grind and no connection with any campaigns.
It looks like they too are seeing people being logged out because of the bot visits, and the IP's listed for the problem bots, include those used by the TT bot.