try doing a factory reset once, the install task manager and kill unwanted apps which runs back ground, I noticed after boot up the RAM left is around 75-90 MB which is horrible but when I use task manager and kill unwanted apps, free RAM goes to 200 + MB and phone runs preety fast ....
does it really reaches 200+ ?? coz e1 i generally do the samething.. but i have never noticed it going above 170... and after multiple use of ATK i find the ram just diminishes e1 wen nothing is running except clock and ATK it reaches approx 60... bt i havent notice any lag due to it bt ya sometimes it does lag..

,no lag anymore,and the market loads up faster if you run a script inside modaco.Although i think i will lose my warranty,not sure maybe if i act dumb in front of the service people