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There are two different thread related patches that I submitted,

I agree that 
<http://sourceforge.net/tracker/?
func=detail&aid=948614&group_id=5470&atid=305470> is pretty radical.  
(Its the one that tests at configure time for LinuxThreads peculiarities 
and alters the thread spawning and signal related activities accordingly.)

A different related signal patch
<http://sourceforge.net/tracker/?
func=detail&aid=949332&group_id=5470&atid=305470> might be more 
appealing to you. It only unblocks signals like segmentation faults that 
creates synchronously sends to itself and that a pthreads implementation 
will always send to the faulting thread. (whether it blocks it or not.)