We had the same problem on a test box micro atx board with dual core & 2 G Ram when we first installed it. We were doing a few more test and now the 64 bit system works and I can add users with the GUI and it gets done correctly and works. There is a problem with a new rewrite for the login checking script. I found it listed as in BugZilla. Will send you the bug report tomorrow
Don't plan to give up on SL is the long term answer to our OS issues. -The only thing I will miss is the neat maintence scheme Open Suse has. Larry Linder
