Log viewer doesn't work

I use KDE 4.9.2 in Kubuntu 12.04 (64bit) and I had problems when I used KDE 4.9.1 (while scanning, Linux freezed).
Now scanning work, but log viewer doesn’t show any events, alerts… - nothing ???
Is this because of KDE update or Comodo?

[SOLVED]

This is strange. I have done only one thing - I re-installed Comodo and now log viewer works perfectly ???

[NOT SOLVED]
I just can’t understand what is the problem in my Kubuntu 12.04.
Today I started scanning the whole system and after a while PC freezes >:(
Log viewer works well but scanning doesn’t.
If I scan just a few folders (not so many files and/or no big files) it works well, but in longer scanning… (:AGY)

Sometimes log viewer doesn’t work, sometimes scanner doesn’t work etc.

Could Comodo provide logging/debugging scanner that writes to log every action it takes before executing it? :-La

ps.
INSTALL /tmp/driver/redirfs/redirfs.ko
DEPMOD 3.2.0-31-generic
and
INSTALL /tmp/driver/avflt/avflt.ko
DEPMOD 3.2.0-31-generic
works.

Does the machine have the pae kernel?
Does the freeze happen at a /usr file?
https://forums.comodo.com/comodo-antivirus-for-linux-cavl/comodo-antivirus-for-linux-cavl-v102398181-is-formally-released-t85030.30.html

I use 64-bit kernel and command: grep --color=always -i PAE /proc/cpuinfo shows pae (colored for easier spotting).
Output:
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm dtherm

I don’t know if it happens when scanning /usr (I am AFK while scanning).

And today it freezed again and I had to re-install whole system, because of kernel panic -kind of system crash (there were some errors in some critical file(s) ).