For some reason when I try to add an "in memory" my internet explorer hangs. I have done this a lot and sometimes it hangs sometimes it does not. It seems like the changes I make stick but after hitting save it hangs. Also, after hitting edit it sometimes hangs. Is this my machine or program?

When you say it hangs, does it ultimately refresh and appear normal? You have 25,000 Classmates in there, so when you're making changes to your site that invovles the Classmates table, they're going to take longer to process than a typical class.

When it hangs it does not come back. I must admit though,my patience is a little low this week. I will try again.