Hi, I've almost forgotten about this bug.
Inkscape 0.46 on Ubuntu 9.04 still fails to render the sinx.svg which I post on 2008-05-23.
The symptom is same as before: no lines but only letters are rendered.
Your workaround is useful for me, thanks.
Let me post my problem as a separate bug, if the forthcoming Inkscape 0.47 still fails to render the sinx.svg.