I see seperate IP's on differant pages; so it's not that they're getting "stuck" it's just that they're sending a lot of bots out... It shouldn't effect anything too much (50 bots don't take up as much resources as you'd think).
There are some robots.txt rules to keep bots out of "un-needed spots" (such as the calendar, where they'll incriment day by day into oblivian).