Upgrading to xcode and can't connect to the network

Hi! I use a C++ library in my application which connects to the network (I suppose it uses sockets). I've been using it for months and I was using xcode 3.2.4. Now, I just had the great idea of upgrading to xcode 3.2.5, and I found out my application was crashing with the error:
If you are encountering this problem running a simulator binary within gdb, make sure you 'set start-with-shell off' first. 3.2.5
Ok, couldn't solve it, so went back to 3.2.4, as suggested somewhere. The application is not crashing anymore, but now the library can't connect anymore to the network. Tried to rebuild it (I didn't write the library but I have the sources) and use the new library, but nothing. Still the library can't connect to the network. I tried with every simulator.
Any idea what there could be wrong and how I may be able to solve this? Can I somehow delete manually everything related to xcode and the simulator and try to start all over again?
Thanks!

I've been able to temporarily solve this problem by removing the entire Development directory and installing again xcode 3.2.4. Even with xcode 3.2.4 however, the same happened, and I had to do this procedure again. Now it seems to be working correctly, but it seems something very strange has happened. Hasn't anyone experienced anything similar?
Thanks!

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Upgrading to xcode and can't connect to the network

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