$ gdb lxpanel
GNU gdb (GDB) 7.5.50.20120815-cvs (cygwin-special)
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-cygwin".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/bin/lxpanel...Reading symbols from /usr/lib/debug/usr/
bin/lxpanel.exe.dbg...done.
done.
(gdb)
(gdb) run
Starting program: /usr/bin/lxpanel
[New Thread 6556.0x333c]
[New Thread 6556.0x3310]
[New Thread 6556.0x3764]
[New Thread 6556.0x13cc]
[New Thread 6556.0x2b60]
GLib (gthread-posix.c): Unexpected error from C library during 'pthread_mutex_un
lock': Invalid argument.  Aborting.

Program received signal SIGABRT, Aborted.
0x00000000 in ?? ()
(gdb) bt full
#0  0x00000000 in ?? ()
No symbol table info available.
#1  0x7780f8b1 in ntdll!RtlUpdateClonedSRWLock ()
   from /cygdrive/c/Windows/system32/ntdll.dll
No symbol table info available.
#2  0x7536149d in WaitForSingleObjectEx ()
   from /cygdrive/c/Windows/syswow64/KERNELBASE.dll
No symbol table info available.
#3  0x000003f4 in ?? ()
No symbol table info available.
#4  0x00000000 in ?? ()
No symbol table info available.


`cygcheck -svr` output: http://kpaste.net/b33848b4b