1. phone shows more bars in status bar for signal, however signal strength (settings>about phone>status) remains approximately the same (within 5 dBm) as prior to update
2. noticed slowness when backing out of aps, especially messaging.
3. my phone is using a lot more memory than prior to the upgrade.
4. browser is more twitchy when scrolling especially when you get to the end of the page.
5. when the phone is charging it doesn't show the battery level anymore on the main screen (ie when you wake it up)
even after factory reset, the above are still true.