postgres processes

Hi!
I have following problem:

I use php with postgres as backend. Every time, I run some queries,
postgres creates a lot of processes - this causes extremely high processor
usage.
I execute some queries in quasi-parallel way, cause I need its results.
But other are executing and every time I free result - all of those
queries are executing on the same connection. So is it normal, that I get
so much processes? And if there is some way to limit it? Or may be change
process live time?
TIA
Rem

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Remigiusz Sokolowski e-mail: rems(at)gdansk(dot)sprint(dot)pl * *
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