Steps to reproduce:
1. Install the Nokia Qt SDK and create a new project from Qt Creator using the "Mobile Qt Application" template.
2. Select the MinGW simulator build config (probably irrelevant) and the Qt for Symbian devices build config.
3. Build the project for the device.
4. The build finishes successfully and the app runs on the device... but the compiler outputs 288 warnings.

I have first encountered this error when switching a project from QtC 1.3.1 with the 3.2 FP2 SDK to the Nokia Qt SDK. Building that project resulted in 1000+ warnings.

P.S: Another thing worth mentioning is that at one point during the Maemo install I pressed cancel because the Maemo driver was not certified for Vista and then cancel again to stop the Maemo setup. The SDK setup froze and I had to kill sh.exe for it to continue. No other errors were displayed.