[Again] Postgres performance problem

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Hi,

I having the same problem I told here a few weeks before. Database is
using too much resources again.

I do a vacumm full each day, but seems it is not working. I am preparing
an update to postgres 8.2.4 (actually I am using at 8.1.3, and tests for
update will need several days)

Last time I had this problem i solved it stopping website, restarting
database, vacuumm it, run again website. But I guess this is going to
happen again.

I would like to detect and solve the problem. Any ideas to detect it?

Thanks in advance,

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