Now you mention it, mine started doing that the other day...
Have you noticed really bad static/noise in the picture while streaming movies from xbox video or Netflix?
Loading User Information from Channel 9
Something went wrong getting user information from Channel 9
Loading User Information from MSDN
Something went wrong getting user information from MSDN
Loading Visual Studio Achievements
Something went wrong getting the Visual Studio Achievements
The thing I've learnt about using WiX over the years is keep the MSI's as simple as possible and put the smarts regarding pre-reqs and picking options in the WPF Burn bootstrapper and pass the settings to a bunch of smaller, dumb, MSIs.
We also, in early versions wrote custom actions to do all our DB installs and upgrades, this really isn't a good idea, and now we're moving to a custom app that runs after install to deal with all the database upgrades etc. (if you've installed TFS, that's a good example of what we're doing now)
It's not like it takes a lot of effort or upfront costs these days
While not really a crash, I am getting a major hang on youtube just after the page loads on all my machines with IE11. Say you hit the homepage, it renders and I start scrolling down the page then it hangs for 30-60 seconds then starts working again