There seems to be some kind of a bug:
Sometimes after watching DVB-S for some time and then zapping to some DVB-T (MPEG4AVC in my county) channel, the picture won't appear. Instead message pops up, telling "tune failed".
Restarting Enigma2 usually fixes the problem.
Any known cure for that annoying bug?
EDIT: I have some more information:
The problem appears if I tune to DVB-S2 HD channel, which I haven't prevously watched, for at least ~15 seconds, after that, when I zap back to a DVB-T (MPEG4 H-264 AVC) channel, it won't be opened... I can fix the problem by zapping to a DVB-S (not -S2) channel for at least ~15 seconds.
After that DVB-T channels are OK again...
This problem is repeatable... so I guess it is some kind of a software bug...