Segmentation fault with "./pgm" but not with "wine ./pgm"

[Sundial Services International Inc]

After updating Linux (glibc) the following problem has surfaced:

[#1] If a Win32 executable is run from the shell with "./pgmname" the program 
does not run but produces the message "segmentation fault."  (If there is a 
traceback or log then I don't know how to get it.)

[#2] However:  if the program is run with "wine ./pgmname" the program runs 
normally.

Perhaps the most basic problem I have here is that, in scenario #1 when all I 
get is "segmentation fault," I don't know how to get more info, a traceback 
or a log.  

System is RHLinux 8.0, Wine 20030318, which ran just fine in both scenarios 
until an update was applied which included glibc.

Incidentally, I rebuilt Wine from source and even rebooted the machine (sigh, 
thus ending 100-odd days of uptime) with no effect on the prob.  Obviously if 
I knew how to see the real failure-message I could probably shoot it.