Bugs to be addressed:
1. Running version 2.1.6 on galaxy s2 the market gets stuck sometimes when browsing descriptions, screen stays on cannot access any hardware buttons and phone does not reboot either only method is to take out the battery and restart again i have found no solution to this problem and this is a ongoing problem in miui. The problem is it does not happen every time but once every 2-3 days it does happen and i have to take out the battery.
2. Battery drain is 1% every 1 minute while screen is on, set on auto brightness however i managed to lessen the battery drain with set cpu app by lowering the frequencies and applying certain profiles to meet my requirement and it worked so now i have less battery drain but i believe the kernel needs improvement and better management of battery life overall.
Also there is only solution to the market which i have found that actually works, downgrade the market to 2.3.6 and then immediately in the terminal emulator app putting in the commands, as shown here
http://www.chlankboot.com/blog/disabling-android-market-update
It does work but its not a good solution because you will be stuck on the old market version and this market version works very well in miui roms thats the only working fix there is unless anyone knows of a better solution downgrading to anything higher the 2.3.6 does not work even if u freeze the updator in TB or disable it in TE only this version works and you can probably get the apk for 2.3.6 somewhere on the net.