iOS cant see the iphone simulator

I work with Mac 10.5.8 with Xcode 3.1.4 that ope the iphone simulator 3.1
After two weeks of continuous work and suddenly I Can't see the iphone simulator, the top menu of the iPhone simulator is presented, but do not see the iPhone(simulator) itself.
I tried to reinstall - did not help

Please please help me.

robbieduncan said:

Were you using an external/second screen that is now not connected? Perhaps the window is appearing off-screen. Try deleting the file ~/Library/Preferences/com.apple.iphonesimulator.plist (whilst the simulator is not running).

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mybe this is the problem ,the file com.apple.iphonesimulator.plist not exist at this directory and other directories
what to do?

robbieduncan said:

Are you sure? It pretty much should if you've run the simulator and moved the window at all. If you open Terminal.app and copy/past

Code:

ls -l ~/Library/Preferences/com.apple.iphonesimulator.plist

what do you get?

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You were right, the file is really there and deleting the simulator file cause back to work made
Any Forum that i publish this problem did not know any answer to my problem
Thanks again for the wonderful solution