I’ve only installed a few extensions, one being LastPass. I’m using the dev version of Chrome, and noticed that unlike in Firefox, if you open a page and then login to LastPass with the extension, you have to reload the page in order for LastPass to suggest your login info.
How is the speed with several extensions installed? One of the knocks on Firefox (which I haven’t noticed, actually) is that extensions slow it down.
Regarding speed, I was thinking this whole Chrome speed thing was a myth until I got my netbook. On all of my other machines, which are a couple years old or less, I notice no speed difference at all between Firefox and Chrome. On my netbook, which has only an Atom processor, I do. As a result, I end up using Firefox everywhere except my netbook.