[Milhouse]

If you've installed additional drivers then it's very likely they'll stop working when you upgrade the rest of the system to a new kernel. Upgrading in the way you have is not recommended - you should be installing drivers that are compatible with the system you are running. Clearly you got lucky to begin with, and your luck won't last forever. If you need drivers that are provided by the dvb_drivers build then it's highly unlikely you'll be able to continue using these test builds.