If SEGVs occur on one specific machine, my guess would be that something is out of sync due to a incomplete or failed hotfix installation. Assuming all your machines are at the same version/maintenance level with the same hotfixes installed, compare the files in the <SASROOT>/SASFoundation/9.4 directory on a working machine to the ones on the failing machine to see if there are differences, specifically in shared library files *.so (UNIX/Linux) or *.dll (Windows).
Also, the SEGVs may occur in multiple SAS programs, but only when executing something similar (a specific PROC or data step function). If you can find out what it was executing when SEGV occurred, maybe that would help narrow it down.
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