-ui constantly lags
-apps take 2s (ok) to 10s (very much meh) to load. and make ui suffer even more. i had no funky services in background.
-multitask menu bacground is sometimes missing.
-even the touch seems to lag, it sometimes feels like its one touch late. i never had this before.
-daily use of this v4 is like phone always telling you "heh f$$$ you, im busy doin' stuff in the background right now, come back later, dare to touch me again i will freeze for the next 5 seconds".
this is why i restored to v3. just my feedback. no offense or flame intended.
on the good side :browser seems a lot faster to display full web page than v3 and also blacklist calls works now and the phoning apk is much better than v3
i restored to v3 with everything about telephony and browser from v4. so far its gone smooth again