Proc::UID test problems

[Gordon Haverland <ghaverla@materialisations.com>]

I wrote a program to help install a package, which makes use of 
effective UID changes.  And Proc::UID fits those requirements 
nicely.

On my computer (Debian/unstable), Proc::UID compiles and installs 
fine.  On another computer (Debian/stable), the SUID test (04) and 
the SGID test (05) both fail.  Installing perl-suid didn't help.  
Any ideas what is wrong?  The tests fail on command lines that 
look like:

  system("04_test.t2");

where the script 04_test.t2 is SUID..

Thanks
Gord