pgadmin3 crashes when editing tables

Hi -
I'm experiencing a problem with pgadmin3 1.4.0.  I'm running it on
Gentoo Linux.  I had the same problem with the 1.2.2 release.
Basically, pgadmin3 will crash under certain circumstances when editing
the contents of a table in the grid editor.  It seems to occur when one
column is a serial column, getting its values from a sequence.  If this
column is left blank, other fields filled in, and then press Enter, the
entire program crashes, without any error messages other than
"Segmentation Fault."
While not a show-stopper, this definately makes the program less useful.
I'm not sure if other are experiencing the problem, or if its unique to
the combination of libraries I'm linking to...  I don't have very much
experience in this area, so I'd appreciate any help I can get.  I'd be
happy to provide more information about my setup as needed.
Thanks,
-- 
Patrick McDonnell