a lot of files in Sessions

Hi!

I have a visited website, and i have a problem. i upgraded from 2x to 3X, and now, my folder of session have more than 600.000 files!  i viewed sessions, and are a lot of Bots (google,and others) .

in the last version of codeigniter, I did not have that problem (with the same bots) .

in both version(2x and 3x) i loaded the session library in autoloader.

anyone have the same problem? or the solution?  my expiration time is 7200 (default)

thanks!!

http://forum.codeigniter.com/thread-64932.html