Use case: trying to open native Symbian video player to play a video file.
Now, if the filename includes a space, the player will not open on Symbian Belle / Qt 4.7.4 / 111.010.1009. A blank view with title "services" is being shown.
Without a space in the filename the playback starts OK.
In Symbian Anna / Qt 4.7.3 / v025.004 both cases (with and without space) work OK.