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Bash hangs in WaitForMultipleObjects

I have bash processes that hang sometimes and have been investigating with gdb.  I have gathered the output from gdb about an offending process and included below.  I am running 1.5.9 of the cygwin dll, I have searched through other postings and in google.  Have seen some references to hanging in bash but mostly occurring with rsync or ssh.  This is very reproducable for me.  Any help is appreciated.

(gdb) attach 7804
Attaching to process 7804
---Type <return> to continue, or q <return> to quit---
[Switching to thread 7804.0x18fc]
(gdb) bt
#0  0x77fa144c in ntdll!DbgUiConnectToDbg () from /cygdrive/c/WINNT/system32/ntd
#1  0x7c57feb4 in KERNEL32!DebugActiveProcess () from /cygdrive/c/WINNT/system32
#2  0x61003e24 in getprogname () from /usr/bin/cygwin1.dll
#3  0x61003dda in getprogname () from /usr/bin/cygwin1.dll
(gdb) thread 3
[Switching to thread 3 (thread 7804.0x14d8)]#0  0x77f9323e in ntdll!ZwWaitForMul
tipleObjects () from /cygdrive/c/WINNT/system32/ntdll.dll
(gdb) bt
#0  0x77f9323e in ntdll!ZwWaitForMultipleObjects () from /cygdrive/c/WINNT/syste
#1  0x7c59a059 in WaitForMultipleObjectsEx () from /cygdrive/c/WINNT/system32/KE
#2  0x7c599f6c in WaitForMultipleObjects () from /cygdrive/c/WINNT/system32/KERN
#3  0x61003e24 in getprogname () from /usr/bin/cygwin1.dll
#4  0x61003dda in getprogname () from /usr/bin/cygwin1.dll

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