It's way too slow and sometimes never gets me where I want to go.
If it's too slow do the following...
type about:config in the address bar
change network.http.pipelinning to true
change network.http.pipelinning.maxrequests to 10
That's one thing I like about it... it's configurable. Also I love tabs. And the Adblock extension is absolutely wonderfulllllll!