samba - Nov 2001 - Error: Too many session users??

Hi,

I'm getting the following error quite often in my samba logs. Is there
anything particular that
I need to check or setup in smb.conf? 

[2001/11/15 23:49:40, 1] smbd/password.c:add_session_user(299)
  Too many session users??


Please send troubleshooting tips if any related to this problem.
I'm using samba server version 2.0.7


Thanks

Umesh Talwalkar