I've been the first to bash mozilla recently (the open source Netscape successor - see [mozilla.org...] )so it's only fair that I point out when I see something good :).
I downloaded the latest nightly build last night and I have to say it it much faster than previous and seems as fast or faster than Opera. I havent used it for long enough to identify any stability problems though.
Just trying it for the first hour. Still shaken from the massive trauma version 6.0 caused me, I waited to read more about it here before even trying the new patch.
In my humble opinion it is a great improvement from version 6.0. But it is not as fast as Opera yet! It takes almost 20 seconds to load on my PC and almost 10 on my Mac.
I am glad Netscape "transition" made me discover Opera. It became my preferred browser for overall job stuff.
I'll certainly agree the latest builds are much, much better than even Mid may builds. I was surprised how much faster it was. That's comparatively speaking - I'd still call it a bloated dog slow browser here. I think the requirements for serious Moz under winders is 700mhz with at least 128 meg of ram (even then, you'll see swapping after 10-15pages - 256meg is more like it).
I'm slow to reply (been busy lately), but I thought I'd kick in a little info: NS6.1 PR1 was based on Mozilla 0.9.1. NS6.1 RTM is based on a branch from Netscape 0.9.2. The open source bits of 6.1 will be released as Mozilla 0.9.2.1. As I recall, 6.1 shipped with XSLT disabled.
My advice is to skip Netscape and grab 0.9.3 unless you need/want the NS additions, such as AIM integration and the spell-checker.