I also observed some toolbar problem in Rc1, but may not be the same one
discussed above.
Until Beta4, I can dock the preview/update toolbar next to the standard
toolbar, and if I did so, the preview/update toolbar will stay next to the
standard toolbar at next startup of LyX. However, in Sc1,
> Any idea what these strange icons in the toolbar are?
This toolbar was recently added by Pavel:
http://www.lyx.org/trac/changeset/25984
This problem is independent of a Qt as it appears with Qt 4.3.3 and 4.4.1.
regards Uwe