I got errors when run demos on the arm board.
qt-embedded 4.5.2

/ghye/demos/affine $ ./affine
QWSSocket::connectToLocalFile could not connect:: Bad file descriptor
QWSSocket::connectToLocalFile could not connect:: Bad file descriptor
QWSSocket::connectToLocalFile could not connect:: Bad file descriptor
QWSSocket::connectToLocalFile could not connect:: Bad file descriptor
QWSSocket::connectToLocalFile could not connect:: Bad file descriptor
QWSSocket::connectToLocalFile could not connect:: Bad file descriptor
No Qt for Embedded Linux ant to run this program as a server,
add the "-qws" command-line option.

/ghye/demos/affine $ ./affine -qws
QWSServerSocket::init: Address family not supported by protocol
QWSServerSocket: unable to crea/QtEmbedded-0
Aborted

what was wrong ??...