Got me stumped.....

[KINGofBLEH]

Got several users at the office who are having the same problem. Once a day at the same time each user loses all network connectivity. The laptops are IBM T23's which are docked while in the office. They are running Win 2k SP4 IE6.0 on a Win 2k domain. IP addresses, WINS and DNS server are assigned dynamically. Other apps include Office 2k, Lotus Sametime, Minitab, Project, Visio, and QWS3270 (3270 emulator). The symptoms are page not found errors in IE, Sametime loses connectivity to server, unable to access mapped drives, etc. Network: Cisco 6500 and 7500 routers with Cisco switches running multiple VLAN's on each switch.

So far I have tried reinstalling IE6.0 and SP4. I have also run virus scan (SAV 8 corp. ed.), Spybot and Adaware. No viruses and Spybot only revealed the usual Gator, Comet Cursor, etc.

Any other thoughts/ideas on how I can troubleshoot this problem?

Thanks in advance.