Crash in TextControl

Here's a backtrace from a crash I seem to be getting fairly often. Does
anybody else see this? I assume this is some kind of race as it seems to
occur sporadically at track change. I tried extending the mutex in
TextChanged to cover the RenderText, but I don't think it helped. 

#0  0x4022346f in mallopt () from /lib/libc.so.6
#1  0x40222e80 in mallopt () from /lib/libc.so.6
#2  0x40222145 in malloc () from /lib/libc.so.6
#3  0x404eccce in create_font_raster(int, int) () from ./plugins/zinf.ui
#4  0x404ecec8 in calc_size(_efont*, int*, int*, char*) ()
   from ./plugins/zinf.ui
#5  0x404ed760 in EFont_draw_string(_GdkWindow*, _GdkGC*, int, int,
char*, _efont*) () from ./plugins/zinf.ui
#6  0x404e5cf3 in GTKFont::Render(Rect&, std::string&, int, Color
const&, GTKBitmap*, bool) () from ./plugins/zinf.ui
#7  0x404ec9d7 in GTKCanvas::RenderText(int, Rect&, std::string&,
AlignEnum, Font*, Color const&, bool, bool, bool) () from
./plugins/zinf.ui
#8  0x404b0bd3 in TextControl::TextChanged() () from ./plugins/zinf.ui
#9  0x404b0b0b in TextControl::Transition(ControlTransitionEnum, Pos*)
()
   from ./plugins/zinf.ui
#10 0x404acd54 in Control::AcceptTransition(ControlTransitionEnum, Pos*)
()
   from ./plugins/zinf.ui
#11 0x404accb6 in Control::StringValue(bool, std::string&) ()
   from ./plugins/zinf.ui
#12 0x404a7e28 in Panel::ControlStringValue(std::string const&, bool,
std::string&) () from ./plugins/zinf.ui
#13 0x404a9a9f in Window::ControlStringValue(std::string const&, bool,
std::string&) () from ./plugins/zinf.ui
---Type <return> to continue, or q <return> to quit---
#14 0x404d58f3 in ZinfTheme::UpdateTimeDisplay(int) () from
./plugins/zinf.ui
#15 0x404cfba5 in ZinfTheme::AcceptEvent(Event*) () from
./plugins/zinf.ui
#16 0x08064d55 in Player::SendToUI(Event*) (this=0x80b3f58,
pe=0x94943f8)
    at /usr/include/c++/3.2/bits/stl_vector.h:289
#17 0x080646e2 in Player::HandleMediaTimeInfo(Event*) (this=0x80b3f58,
    pEvent=0x94943f8) at base/src/player.cpp:1861
#18 0x08064c24 in Player::ServiceEvent(Event*) (this=0x80b3f58,
pC=0x94943f8)
    at base/src/player.cpp:2076
#19 0x0806211e in Player::EventServiceThreadFunc(void*)
(pPlayer=0x80b3f58)
    at base/src/player.cpp:894
#20 0x080917e0 in pthreadThread::InternalThreadFunction()
(this=0x935cf88)
    at base/unix/src/pthreadthread.cpp:71
#21 0x080917aa in pthreadThread::internalThreadFunction(void*)
(arg=0x935cf88)
    at base/unix/src/pthreadthread.cpp:60
#22 0x40032d53 in pthread_start_thread () from /lib/libpthread.so.0




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