I have also thought that some people just don't recognize 25 fps from 50 fps. At least for me those are two totally different things. YMMV so to speak.

I have updated my fennec nightly daily and i found it stuttering and bit laggy. I wonder if this new firefox is same as these nightlies.

I would not say slow as hell, but it´s not smooth and trying to scroll when page is loading just hangs my firefox/fennec completely. It just loads page. Kinetic scrolling is also not so good.

Thing that worries me most is that these guys should be top of line coders on this platform and represent to me the people who should be the first to unleashing n900's full power...and then we got this...i´m just worried. Really really worried.

.edit
It just pisses me that there is new functionality and stuff but then UI experience (scrolling, zooming) is below middle (microb).

..edit
Okey so they are aware of this problem:
https://wiki.mozilla.org/Electrolysis
I´m eagerly waiting for that.