regression test failure with HEAD on OSX

"make check" produces the following regression.diffs:

*** ./expected/geometry.out     Fri Oct 31 22:07:07 2003
--- ./results/geometry.out      Thu Aug 26 00:51:46 2004
***************
*** 117,123 ****          | (5.1,34.5) | [(1,2),(3,4)]                 | (3,4)          | (-5,-12)   | [(1,2),(3,4)]
            | (1,2)          | (10,10)    | [(1,2),(3,4)]                 | (3,4)
 
!         | (0,0)      | [(0,0),(6,6)]                 | (-0,0)          | (-10,0)    | [(0,0),(6,6)]                 |
(0,0)         | (-3,4)     | [(0,0),(6,6)]                 | (0.5,0.5)          | (5.1,34.5) | [(0,0),(6,6)]
    | (6,6)
 
--- 117,123 ----          | (5.1,34.5) | [(1,2),(3,4)]                 | (3,4)          | (-5,-12)   | [(1,2),(3,4)]
            | (1,2)          | (10,10)    | [(1,2),(3,4)]                 | (3,4)
 
!         | (0,0)      | [(0,0),(6,6)]                 | (0,0)          | (-10,0)    | [(0,0),(6,6)]                 |
(0,0)         | (-3,4)     | [(0,0),(6,6)]                 | (0.5,0.5)          | (5.1,34.5) | [(0,0),(6,6)]
    | (6,6)
 

======================================================================

The platform is OSX 10.3.5.

-Neil