My N900 is one month old. For the last week or so, it has become very slow. Issues noted,

1. I was playing Angry Birds, a Call came in (vibration mode). Touchscreen became unresponsive, screen went black, phone application appeared too late and the call was missed. For the first time ever.

2. Audio stutters badly at the beginning of the songs. If you browsing simultaneously, it stutters more.

3. Sometimes, video slows down as well. But it is managable.

4. X-org consistantly at 6-8% CPU. Is that normal?

I don't have a lot of applications installed and certainly none from dev or testing. Have FM transmitter widget, WiFi switcher, Camera Cover reminder and MediaBox. Whenever I tried "top" command, I don't see any applications spiking CPU too much. 73% used rootfs.

I simply couldn't figure out what is causing the slow down. I know there are couple other threads discussing similar issues, but, found no answers. I would be grateful if someone can help me fix this. Thanks in advance.