Mine was actually updated from the ovi store, which is odd since I have the mozilla catalog and got 1.0 from there.

Definitely remove the old fennec directory from ~/.mozilla. That helped speed a bit.

My experiences are the same as most here. Starts up slow, but I don't care about that. It's the jagged scrolling that I hate. When a page is loading, you can't do much but just wait. It's not bad on a small page (talk maemo for example), but a large page will just cripple fennec. While microb stays silky smooth at all times. Fennec does have an awesome interface though, and there are so many little things I love about it. They just need to get the scrolling down.

Check out that fastest scrolling in the west add on.

Once the page is loaded, it's not that bad. Maybe microb just has spoiled us. Fennec does seem to render a bit faster too. Going to give it a fair shot this time. Maybe I will get used to it.