Bug#492871: more logging

[Arnout Engelen <arnouten@bzzt.net>]

Actually this stacktrace does tell us something - there was a bug in the 
shutdown code, getAlsaTime() was called from outside the check on the midi
handle.

This particular crash has now been fixed upstream (both on trunk and on the 
1.7-branch, svn revisions 10771 and 10771). However, it is only triggered in 
this way if initialising the ALSA sound/midi driver has failed. 

Did you expect the ALSA sound/midi initialisation to fail in your case? If so,
then I think this bug is now fixed upstream. If not, could you start 
rosegarden from the commandline and provide any more logging leading up to
the crash?