Was a tad irritated when Firefox suddenly announced it was loading FF 4.0 - I prefer to download new versions myself and load when it suits me (somehow - ??? - version 3.6.13 reset itself to automatically download updates).
While the new interface is an improvement, performance certainly is
not improved (like it's using at least double the amount of memory). It's running on a netbook so there isn't a huge amount of memory (2Gb) and performance really sucked.
Also, there appears to be no way that you can save multiple tabs when shutting version 4.0 down. Took appreciable time to open up required five tabs.
Cutting a long story short - have removed version 4.0 and reverted back to version 3.6.13 - Big thumbs down from a long-term user. Even considered moving to IE9 (but it isn't available for Win XP).
Any other experiences?