Tvheadend

Hi all,
I'm trying to setup a dvb server using ubuntu server 12.04 and tvheadend, I've added tvheadend repository as stated here: https://www.lonelycoder.com/tvheadend/download and installed the package, using web interface I added all the muxes for italy, then, during scanning, I see this warning in the interface: "*There seems to be a problem with the live update feed from Tvheadend. Trying to reconnect...*".
Running the dmesg command I can read as the last line:

[ 3186.652420] tvheadend[3114]: segfault at 0 ip b7518e41 sp b52fba7c error 4 in libc-2.15.so[b749d000+19f000]

If I try to restart tvheadend via init.d, it restarts, but after a while it crashes again with the same error.

$ uname -a
Linux hibox 3.2.0-24-generic-pae #39-Ubuntu SMP Mon May 21 18:54:21 UTC 2012 i686 i686 i386 GNU/Linux

thanks for the help.