Service Pack 3.1 Crashing ?

I just upgrade my SW 2008 from 1.0 to 3.0 and 1.0 was workingfine with hardly any crashing or lag. Once I Upgraded to 3.0 itstarted crashing ALOT so I then upgrade to 3.1 in hope they fixedit but I really see no change in fixing the crashing and lagproblems. Anyone else having this problem.

ThanksSolidworksAdministration