Random segfaults

[MageSlayer]

Hi

I experience various troubles in Audacity. Stable work lasts for 15-20 minutes only.
Problem is always the same - sound begin to interrupt, stereo channels work asynchronously and Audacity suddenly segfaults.
I've already tried to use 1.3.7 and 1.3.8 with the same results.

I'm on Gentoo, so I build Audacity from sources. I use -march=i686 -pipe options only.
Now I have debug build I can provide gdb backraces. Still I think the problem should be in some libraries or wrong compile procedure.

I have 2.6.30 kernel, Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller, gcc 4.4, wxGTK 2.6.4.0-r3 and 2.8.10.1, alsa-lib 1.0.19, expat 2.0.1-r1 installed. Jack use flag is not set.

Recent gdb backtrace:
[New Thread 0xb141ab90 (LWP 22925)]
[Thread 0xb141ab90 (LWP 22925) exited]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb7ce4930 (LWP 22056)]
0x00000000 in ?? ()
(gdb) bt
#0 0x00000000 in ?? ()
#1 0x428922ba in wxWindowBase::UpdateWindowUI () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#2 0x4279231a in wxWindow::OnInternalIdle () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#3 0x42805348 in wxAppBase::SendIdleEvents () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#4 0x4280537c in wxAppBase::SendIdleEvents () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#5 0x4280537c in wxAppBase::SendIdleEvents () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#6 0x4280537c in wxAppBase::SendIdleEvents () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#7 0x42805601 in wxAppBase::ProcessIdle () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#8 0x427644d3 in ?? () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#9 0x411d5401 in ?? () from /usr/lib/libglib-2.0.so.0
#10 0x00000000 in ?? ()

Another recent backtrace:
#0 0x081c805c in AudacityProject::GetUpdateFlags (this=0x987cb58) at Menus.cpp:1341
#1 0x081c8af5 in AudacityProject::UpdateMenus (this=0x987cb58) at Menus.cpp:1507
#2 0x081ec9ff in AudacityProject::OnUpdateUI (this=0x987cb58, [email protected]) at Project.cpp:1649
#3 0x424f814f in wxAppConsole::HandleEvent () from /usr/lib/libwx_baseu-2.8.so.0
#4 0x42596aa9 in wxEvtHandler::ProcessEventIfMatches () from /usr/lib/libwx_baseu-2.8.so.0
#5 0x42597b64 in wxEventHashTable::HandleEvent () from /usr/lib/libwx_baseu-2.8.so.0
#6 0x42597c6b in wxEvtHandler::ProcessEvent () from /usr/lib/libwx_baseu-2.8.so.0
#7 0x4288f952 in wxWindowBase::TryParent () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#8 0x42597c09 in wxEvtHandler::ProcessEvent () from /usr/lib/libwx_baseu-2.8.so.0
#9 0x4288f952 in wxWindowBase::TryParent () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#10 0x42597c09 in wxEvtHandler::ProcessEvent () from /usr/lib/libwx_baseu-2.8.so.0
#11 0x4288f952 in wxWindowBase::TryParent () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#12 0x42597c09 in wxEvtHandler::ProcessEvent () from /usr/lib/libwx_baseu-2.8.so.0
#13 0x428921f3 in wxWindowBase::UpdateWindowUI () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#14 0x4279231a in wxWindow::OnInternalIdle () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#15 0x42805348 in wxAppBase::SendIdleEvents () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#16 0x4280537c in wxAppBase::SendIdleEvents () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#17 0x4280537c in wxAppBase::SendIdleEvents () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#18 0x4280537c in wxAppBase::SendIdleEvents () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#19 0x42805601 in wxAppBase::ProcessIdle () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#20 0x427644d3 in ?? () from /usr/lib/libwx_gtk2u_core-2.8.so.0
#21 0x411d5401 in ?? () from /usr/lib/libglib-2.0.so.0
#22 0x00000000 in ?? ()


Please ask what additional information I can provide.
Thanks.