Occasional OS X event-based? crashes

[Nigel]

No pattern yet, not always when jumping to other apps.

2012-03-15 21:08:04.844179 I  Using protocol version 72

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00000001
0x94d57eec in objc_msgSend ()
(gdb) where
#0  0x94d57eec in objc_msgSend ()
#1  0x05e2b6c0 in ?? ()
#2  0x90925460 in __CFBasicHashStandardCallback ()
#3  0x9092506e in __CFBasicHashDrain ()
#4  0x9090d101 in _CFRelease ()
#5  0x05fcef58 in IOHIDQueueClass::~IOHIDQueueClass ()
#6  0x05fcf576 in IOHIDObsoleteQueueClass::IOHIDObsoleteQueueClass ()
#7  0x05fcdd40 in IOHIDIUnknown::release ()
#8  0x0211bcbd in AppleRemote::stopListening (this=0x5e23cf0) at AppleRemote.cpp:103
#9  0x04e28b47 in QApplication::notify ()
#10 0x05a35dec in QCoreApplication::notifyInternal ()
#11 0x04e2c5fd in QApplication::setActiveWindow ()

OS X 10.6.7

[JYA]

How did you compile it? what Qt version are you using?

Can you provide a full backtrace?

[Nigel]

Oops - meant to assign to myself. Hacked build - mostly using old packager. Qt 4.6.3. Will try a debug build for backtrace if I get desperate :-(

[Nigel]

After a debug build, unable to reproduce fault. Subsequent non-debug build, no occurrence.