2 questions regarding the session table
 

Hi, I've got a couple of questions regarding the session table which i am having tons of problems with.

first, the session table seems to be limited to handle only upto ~12400 rows. this seems like a restraint put on by the database not vbulletin as i have a database error saying the the table is full.
is there a way to increase this limit? (may as well be a mySql rather than vBulletin but still..)

second, as an extreme measure, i am thinking of skipping the whole session creation process for guests. would this be feasible? i wouldn't mind losing the guest login counts (if this is and only what it's used for)?
if feasible, any tips on how? :p

thanks in advance.