INFO:
System:   MacOS X 10.6.4
Compiler: gcc/g++ 4.2.1 (build 5664)
ROOT:     5.27/06 (trunk@35856)

==========================================================

 *** Break *** segmentation violation



===========================================================
There was a crash.
This is the entire stack trace of all threads:
===========================================================

Thread 2 (process 218):
#0  0x00007fff8407208a in kevent ()
#1  0x00007fff84073f5d in _dispatch_mgr_invoke ()
#2  0x00007fff84073c34 in _dispatch_queue_invoke ()
#3  0x00007fff8407375e in _dispatch_worker_thread2 ()
#4  0x00007fff84073088 in _pthread_wqthread ()
#5  0x00007fff84072f25 in start_wqthread ()

Thread 1 (process 218):
#0  0x00007fff840d6c90 in wait4 ()
#1  0x00007fff840eb23e in system ()
#2  0x0000000100128ab5 in TUnixSystem::StackTrace ()
#3  0x0000000100126431 in TUnixSystem::DispatchSignals ()
#4  <signal handler called>
#5  0x0000000101a576c6 in TCanvas::EnterLeave ()
#6  0x0000000101a5b1a2 in TCanvas::HandleInput ()
#7  0x00000001024e955b in TRootCanvas::HandleContainerMotion ()
#8  0x00000001024ef6e0 in TRootContainer::HandleMotion ()
#9  0x0000000102443390 in TGFrame::HandleEvent ()
#10 0x0000000102413570 in TGClient::HandleEvent ()
#11 0x0000000102413e6b in TGClient::ProcessOneEvent ()
#12 0x0000000102413ede in TGClient::HandleInput ()
#13 0x0000000102413efd in TGInputHandler::Notify ()
#14 0x000000010012655c in TUnixSystem::DispatchOneEvent ()
#15 0x00000001000bef6d in TSystem::InnerLoop ()
#16 0x00000001000c1213 in TSystem::Run ()
#17 0x0000000100080867 in TApplication::Run ()
#18 0x0000000100001aaf in main ()
===========================================================


The lines below might hint at the cause of the crash.
If they do not help you then please submit a bug report at
http://root.cern.ch/bugs. Please post the ENTIRE stack trace
from above as an attachment in addition to anything else
that might help us fixing this issue.
===========================================================
#5  0x0000000101a576c6 in TCanvas::EnterLeave ()
#6  0x0000000101a5b1a2 in TCanvas::HandleInput ()
#7  0x00000001024e955b in TRootCanvas::HandleContainerMotion ()
#8  0x00000001024ef6e0 in TRootContainer::HandleMotion ()
#9  0x0000000102443390 in TGFrame::HandleEvent ()
#10 0x0000000102413570 in TGClient::HandleEvent ()
#11 0x0000000102413e6b in TGClient::ProcessOneEvent ()
#12 0x0000000102413ede in TGClient::HandleInput ()
#13 0x0000000102413efd in TGInputHandler::Notify ()
#14 0x000000010012655c in TUnixSystem::DispatchOneEvent ()
#15 0x00000001000bef6d in TSystem::InnerLoop ()
#16 0x00000001000c1213 in TSystem::Run ()
#17 0x0000000100080867 in TApplication::Run ()
#18 0x0000000100001aaf in main ()
===========================================================
