I have been having issues with my xbox for many, many months now, Sometimes i will read disks but not often, it either appears as an Unrecognized Disk" or "Play CD" or simply just not see it, This happens frequently, very frequently, on average it takes me 30-40 mins to get any game working,
Before you say, yes i have cleaned the lens, yes i have sprayed out the tray interior, i dont think dust is an issue.
It has recently picked up the habbit of not openning the tray when either the physical button is pressed or the one on the dashboard
One more thing, When you turn it on and it comes up with the white Xbox splash screen it can take up to 15 mins to load to the dashboard.
I bought it december 2009 and was told i have a 3 year manufacturers warrenty on it, i have since been told by friends that means only if it red rings.