PG_exception_stack

Didn't find a solution for this on the lists, and I am not a yet-brand-new-guru, so... I ask :)

What about this?

I've found a box (dual  Intel(R) Xeon(TM) CPU 2.80GHz) in which to test  the beta2. Trying to cretae proc languages I
foundthis error. I've seen error creating languages on other boxes, but none of them like this one. What makes me a
litlebit lazy is the PG_except... msg.
 

I am trying to do something nasty or just watching something not usual? I've found recent posts related to the BKI and
talkingabout the PG_exception_stack, but none of them seem to handle the createlang situation.
 

Any hints?

[postgres@prdpwgb0208 postgres]$ createlang plpgsql tech_mis
createlang: language installation failed: ERROR:  could not load library "/usr/local/pgsql/lib/plpgsql.so":
/usr/local/pgsql/lib/plpgsql.so:undefined symbol: PG_exception_stack
 
[postgres@prdpwgb0208 postgres]$ pg_config --configure
'--enable-thread-safety' '--with-perl' '--without-docdir'
[postgres@prdpwgb0208 postgres]$ pg_config --version
PostgreSQL 8.0.0beta2
[postgres@prdpwgb0208 postgres]$ cd /usr/local/pgsql/lib/
[postgres@prdpwgb0208 lib]$ ls -ltrh plpgsql.so
-rwxr-xr-x    1 root     root         123k Sep 15 15:41 plpgsql.so
[postgres@prdpwgb0208 lib]$uname -a
Linux prdpwgb0208 2.4.22ow1np-ht #8 SMP Mon Oct 13 19:54:55 GMT 2003 i686 unknown

Regards,
Guido