I'm having a problem with my new server (HP ML 350 w/12 gb memory and dual CPU) and AC v 4.073. The program runs fine when you log in on the server yet when you try to log in on any of the workstations (wired or wireless) it basically hangs, taking over 10 mins to just get off the log-in screen. We left the old server up (Dell dual core with only 2 gb memory) and AC loads in about a minute or so (slow yet acceptable). My IT guy and AC spent most of the afternoon talking yet weren't able to discover anything (AC Tech support was great and I got someone on the phone immediately). Any one have a thought? ON the old server we run Server 2003 Business. On the new server we are running Server 2008 enterprise. I just upgraded from 4.058 to 4.073. Any known conflicts bet Server 2008 and AC? The workstations primarily run Windows XP Pro, yet the two wireless machines run Vista Ultimate. Thanks.