Of late, I've noticed that the Note becomes warm in the region near the camera while using applications such as Words for Friends, PicSpeed Wallpapers and ESPN Cricinfo (an app which delivers Cricket news). Also, the phone becomes very slow sometimes when I am checking or composing an email. When I return to the home screen, it shows up as a blank screen and icons slowly appear, and then the Accuweather app, and notifications bar. I have AVG Antivirus and NetQin security, and they report nothing wrong. But while killing apps manually through the App manager or NetQin's optimize page, I notice that the memory is about 90% in use. Would an SD card help? I'm thinking not because the RAM will still have to take charge of running programs, but what's one way to speed up the phone? And what about the heat?