Are 50 million rows a problem for postgres ?

Hi all, i work in a telco and i have huge ammount of data, (50 million)
but i see a lack of performance at huge tables with postgres,
are 50 million rows the "limit" of postgres ? (with a good performance)
i am waiting for 2004 2 billion records so i have to do something.
Does anyone have a huge database to ask him some issues ?

my hardware is good ,my indexes are good plz dont answer me something like use
vacuum :)

The Joy of Index

Vasilis Ventirozos
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