appFailedToResumeInTime crash

when i am testing my application on ipho开发者_StackOverflow中文版ne 3g and ios 4.2.6 my app is getting blank screen some times when i launch the app after quitting that .and applicationwillenterforeground method is called .at that time can any one explain me how to sort out this

and when i am running the application in 4 it is working fine but if i run my application in 3g . my app is getting crashed some times saying appFailedToResumeInTime .. even though i moved out all the connectivity process from appdelegate method

Try hard resetting the device, press and hold the sleep and home buttons until the device turns off itself. No data from your device will be lost during this process.

It sounds like you are taking too long to resume and the OS is terminating your app (I think you have about 10 secs to launch). I would guess that on the newer hardware it is happening a quicker and just beating the OS.

Look into optimising your start up/resume code.