In my case it was /var/emu
My Vu+Zero had no 2.3.2 version (closest were 2.3.0 and 2.3.
, but I used the 2.3.8 version which worked.
Like in readme I replaced the file renaming it, there was a problem with permissions on the first run, but the decoder fixed them and it is working flawlessly now (I copied the file through FTP).
Before this change I was trying to update cccam (with no effect) and I used two versions of oscam - which sometimes worked and sometimes I was expiriencing freezes like mentioned above. I tried one version or another hoping to watch for example a football match.
Now it is working ok.
In general I see that the CCCam is working better and on more channels, but on the other hand I have the impression that Oscam sometimes work on channels, which are not decodec by cccam.