gppl-patch crash

(I'm not quite sure which forum would be the right one, but since I'm 
pretty stuck I hope someone around here will have a suggestion)

Using postgres 7.4.1 with version 0.5.3 of the gppl patch applied. 
Working like a charm under test conditions, but using a CONNECT BY 
statement with a large-ish start set (START WITH set of 1023 rows is 
sufficient, 1022 is not. Suspicious numbers I must say) the following 
crashes the backend with a signal 11:


create table clientstate (asset integer);
create table configuration (asset integer, parent integer);

... insert some 1290 rows into configuration, connecting asset-parent 
into a hierarchy (representing a directory tree, but doesn't seem to 
matter)

begin work;
insert into clientstatus (asset) select serial as asset  from asset 
limit 1023;
select count(*)
		from
		(select *
			from configuration
			connect by prior asset = parent start with asset in (select asset 
from clientstatus)) as s;

rollback;

I'm pretty blank here. Any leads? Not doing the select in a subselect 
removes the crash, so does having few enough objects in clientstatus... 
I tried browsing the code of the patch, but it's pretty opaque code and 
I didn't get any wiser.


Regards,

David Helgason,
Over the Edge (http://otee.dk) doing great game technology