xrumer 7 is slow ??

Why it's slow ? I'm running it on a dual quad core server with 1 gb port, but it doesn't go beyond 70 threads, and gets only about 150 links/min , I remember few months ago, I use it and I was getting like 1000 links/min.

What happen ? should I uninstall xrumer 7 and use xrumer 5 ? Anyone experiancing the same thing ?

Also, can I run more than 1 instances on the same server installing it in different folder, I know we can use 2 instance at a time, can I use more than 2 on the same server ?

Thanks.

Which kind of links are you posting to? To guestbooks or to forums or to blogs? Anyway, I don't see any drop in performance with Xrumer 7.