IPs repeated too often

[vnportnoy]

Tor is supposed to have thousands of IPs in its pool but for some reason my IP used here is repeated way too often, maybe once every 20th request.
Is this related to the number of tor instances launched at beginning or is it something else?

[iAnanich]

I suggest that even if Tor has a lot of exit points, every Tor instance (process) launched with multitor tool (or pretty much in any other way) doesn't know about other processes around, and so you have no guarantee of using different IPs. but what you really getting - anonimity, because with many Tors running you increasing number of exit points and circles used.
Tor is not realy a way of getting lots of IPs, its a way of masking your real IP.