Update (08/21/09 9:19 am):
Wowza software upgrade fixed the Firefox video issue.


Original Description:
System name: streaming.queensu.ca (Wowza server)

Services affected: MP4 Video streaming (Flash)

Action timeline: Wowza on streaming.queensu.ca will be upgraded (9:00-9:30am)

Details:
MP4 (h.264) videos hosted on streaming.queensu.ca (wowza server) are not playing in latest version of Firefox 3+. It only affects Windows Xp and Vista users. Wowza Upgrade will fix the issue.