I got through to Sprint's 'advanced' level tech support today. I find it hard to believe what the guy told me, but he said the workaround for folks who can't get Qik to work is to use Fring!! He also told me that Sprint is recommending that video chat be used only either over 4G or WiFi -- no 3G.
Why did they even embed this crap in the firmware in the first place, and market 2-way video like it's a useable feature? It's been more like an experiment or beta test since day-1.