i'm not sure it's related to the error i got but when i try to run Qt Mobility Quickstart example (followed the instructions in http://qt-mobility.blogspot.com/2009...start-app.html) i get the following errors:

../untitled/main.cpp:7:29: error: QSystemInfo: No such file or directory
../untitled/main.cpp:9: error: 'QtMobility' is not a namespace-name
../untitled/main.cpp:9: error: expected namespace-name before ';' token
../untitled/main.cpp: In function 'int qMain(int, char**)':
../untitled/main.cpp:14: error: 'QSystemInfo' was not declared in this scope
../untitled/main.cpp:14: error: expected ';' before 's'
../untitled/main.cpp:15: error: 's' was not declared in this scope
mingw32-make[1]: Leaving directory `C:/Qt/2010.04/untitled-build-desktop'
mingw32-make: Leaving directory `C:/Qt/2010.04/untitled-build-desktop'
mingw32-make[1]: *** [debug/main.o] Error 1
mingw32-make: *** [debug] Error 2
The process "C:/Qt/2010.04/mingw/bin/mingw32-make.exe" exited with code %2.
Error while building project untitled (target: Desktop)
When executing build step 'Make'