I have to edit my initial 'thumbs up'. It's become thumbs down now I've used the new OS a bit longer.

- browsing is slow with the capital S. To the point it's useless. (I now know why they made the cpu run faster...)
- memory use of the browser skyrockets on some pages. It didn't do that on these pages in OS2007.
- browser settings seem not to work: it's not saving passwords and the dictonary isn't using new words.
- thumbkeyboard is useless (mentioned before, but nevertheless)

Not directly OS related:

- repositories not reachable, as a result many apps not installing (ie. Canola)

All in all it's a firm thumbs down. Downgrading seems a good option.