Loading up a document with current cvs I noticed the current display problem.
Here's the formula. Note the \right) at the end.
\begin_inset Formula \begin{equation}
\frac{\partial C}{\partial t}=-u\frac{\partial C}{\partial
x}+\frac{D}{A}\frac{\partial }{\partial x}\left(a\frac{\partial C}{\partial
x}\right)\label{eq:1D C-D}\end{equation}
\end_inset
Attached are two small screenshots showing how lyx renders it and how xdvi
renders. The LaTeX is correct but the lyx view is wrong.
Angus
dvi-eq.png
lyx-eq.png
dvi-eq.png
lyx-eq.png