We recently updated our Windows XP/SP2 workstations from IE6 to IE7. While these workstations are pointed to our NBM 3.9 box, streaming training videos fail to play properly. The videos will run for about 20-30 minutes then just stop and restart from the beginning. The videos use Windows Media Player in a pop-up window.

This problem does not occur when workstations are pointed to a Squid proxy. Users claim the problem didn't occur until we moved to IE7 but I was able to reproduce the issue using IE6 pointing to NBM.

Any idea whats wrong??

Heres our configuration: NBM 3.9, NW65 SP6, Craigs proxy.cfg, IE7 using HTTP 1.1