Comment 6 for bug 588155

Some precisions:
- if g-s-d still doesn't start after applying the modification I added, errors will be traced in ~/.xsession-errors file.
- if g-s-d start after applying the modification I added, I think this is because the computation of log(s output take some time and 'slow down the startup of g-s-d. This may be the sign of the race condition that I suspect, but it will be harder to debug.