We have a relatively small active directory environment (70 users).When a user logs onto the network, their computers have hard disk activity anywhere from 3-7 minutes. This is especially predominant on laptops and less so on desktops.
Upon further investigation, part of the problem seems to be due to our anti-virus program (Trend Micro Worry Free version 5.2) which scans every process on start up. Uninstalling Trend (temporarily) does result in reduced log on times, but there is still room for improvement.
Performing an uninstall of Trend, rebooting, and then a reinstall result in improvement but logon process is still not great.
Another complaint associated with slow logon process is the time it takes to load email through Outlook, as we use Exchange 2003 for Email. We are configured for "Microsoft Exchange Server" in cached mode (.ost files) and pop is not allowed. It even takes time until users get the "connected" message when launching Outlook immediately after logging on.
Another issue to note is that we were hit hard at the beginning of February with the DownAd A virus. At this time, I upgraded to Trend Worry Free. Polling users seem to indicate that the problems started at this time.
What really has me stumped is why the process is so unbearably slow on laptops as compared to desktops.
Anyone have any suggestions? At this point I am considering scrapping Trend and using a different Anti-Virus solution, although I am not certain this is the only problem.