Well I've spent most of this evening browsing around, checking e-mail and all sorts and I've had no problems with slowdowns, browser crashes or out of memory errors. Did I mention that my IMAP problem has gone away as well?

Some more specific comments:

• Task switching is quicker, either using the icons or the double arrows (>>), though the arrows are still more usable.
• I've had three browser windows open, on national rail looking up train details, the IMDb looking up Elizabeth and this thread. No signs of poor response and no out of memory errors.
• At no point did the browser disappear with any of the pages I accessed.
• With all of the browser windows open, the e-mail app was a little slow to redraw when switched to, but nothing too painful.
• There is still a problem with the rendering of text only e-mails which seems to take and age to complete, so much so that I kill the opening of the message - it seems to get stuck.
• No problems with video - the Ice Age 2 trailer, opened and ran first time.
• The install worked pefectly first time, using the newly downloaded windows flash app. I did notice that this binary is somewhat larger - by about 2 meg - than the previous two which were identically sized.
• Backup restored my settings fine, though an option to "just do the whole of /home/user/ would be more than welcome .
• Did I mention that IMAP now works?

I thought the previous release was a significant improvement but IMHO this one is an even bigger step forward. Nokia and the developers working on the software, thanks guys, deserve a lot of kudos for continuing to work to improve the 770