asterisk users - May 2011 - is res_timing_timerfd module stable in 1.8?

hi:
   my current system is 1.6.2. I have dahdi hardware card. I must
disable res_timing_timerfd module or sometimes phone calls would
become silent suddenly.
  I don't know the situation in 1.8. I heard that timing is still a
problem in 1.8. should I keep using "res_timing_dahdi" or I can use
"res_timing_timerfd" to get some benefit if I upgrade to 1.8?
  thank a lot for information!!

Regards,
tbskyd

New Text at Bottom:
-----------------------
hi:
   my current system is 1.6.2. I have dahdi hardware card. I must
disable res_timing_timerfd module or sometimes phone calls would
become silent suddenly.
  I don't know the situation in 1.8. I heard that timing is still a
problem in 1.8. should I keep using "res_timing_dahdi" or I can use
"res_timing_timerfd" to get some benefit if I upgrade to 1.8?
  thank a lot for information!!

Regards,
tbskyd
------------------
Hi,
There are a few issues on Mantis that people think are related to timing and
timerfd. I'm not sure what the benefits of timerfd over dahdi are when you
have the dahdi hardware (maybe someone else could comment).
I'm currently testing 1.8.4 with dahdi timing (no hardware) to see if it
solves some of the problems we have been having. Its working so far (touch wood)
but its only three days and about 500 calls in.
I would say if you have the dahdi hardware timer then use it. 
If you have been having a timing related issue with 1.6 and/or 1.8 have a look
on issues.asterisk.org and see if anyone else has reported similar problems that
you can add a bit more info to, if not make your own report.
Regards,
Nic.