I did find this, but it's beyond my Solaris ability and not sure if this is the same issue we're running into or not:
I've also read about it being a tar bug, but that's seems to have been an error from several years back.
Are they running trusted solaris or something else w/ RBAC (not bsa rbac) controls ?
I am seeing the exact same issue and I followed the stack overflow article. In comparison to servers that have run it correctly I can't find any configuration difference that may be the cause of this