POSTGRES TOO SLOW

Hi, my name is mario sanchez, i work on a telecommunications company on the
dominican republic. I recently installed postgres 7.0.1 on a Sun server with
Solaris 5.7. It is working fine but when i try to do a join of two tables of
size, let's say 130,000 records one and the other 200,000 it just freezes
there .... and even if a wait for hours it doesn't give me an answer, and
when i press Crtl+C it breaks, like it's been working on it, but i've waited
a whole night and it hasn't finished.  I've done the same query on vfp and
finished in 2 seconds or so, .... maybe i just configured wrongly the
postgres or I don't know.  I've read all the faq and manuals i've found
about it and i cant figure out what the problem is, can you help me out with
this?

thanks,

Mario Sanchez
Telecomm. Engineer
TRICOM, DR

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