My wife is a school teacher and has 2 IMAC G3 233mhz computers that have the same problem, they freeze after using it for a few minutes. I believe the problem only occurs with use of Internet Explorer, but I'm still investigating. They both only have 32 megs of ram. I have deleted and re-installed IE 5.1 in one of the computers but no help. I am going to try deleting the IE preferences today after work but am looking for any additional help. Thanks.