I did reformat my hard drive and reinstall all the software back to the original. I also reinstalled all the web browers brand new. Could it be, a) I don't have enough memory for these large programs anymore..Netscape and IE, b) That I haven't reloaded system 7.5.5 yet ( I am at 7.5.3 update 2.0), or c) all of the above! It's driving me crazy. The machine locks up eveytime I use it!