We have sound quality problem while running codec_g729-ast12-gcc4-
glibc-opteron.so on asterisk 10.
Client is addpac 1100.
Looks like there is no such problem with 1.8, or we had no such
problem before upgrade.
pentium4 codec can not be loaded.

cpuinfo:

processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 5
model name      : AMD Opteron(tm) Processor 248
stepping        : 10
cpu MHz         : 1000.000
cache size      : 1024 KB
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext lm 3dnowext
3dnow
bogomips        : 2004.26
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp

Thank you!

Although  when I downgraded to 1.8 and problem disappered, I think I'm
wrong about g729 problem,
I found that I compiled 10 with func_speex, and we had problems in
meetme, so denoise was automatically tuned on.
So, more likely, problem is low cpu power, I'll be able to check this
only in February, though, after vacations :-)

Thank you!