Font mystery

[Paul A. Rubin]

Hi all,

I've got a recurring issue with LyX 1.4.3-4 (and -5, I think).  It 
manifests as LyX displaying the wrong glyphs for some symbols in math 
insets (although math preview converts them correctly).  For instance, 
the integral sign displays as a capital R.  Uninstalling and 
reinstalling the Bakoma4LyX fonts cures the problem, and previously I've 
blamed this (possibly incorrectly) on the fonts that install with LyX. 
However, it happened again today, and I have not updated LyX on my 
laptop recently.  Sure enough, deleting the eight TrueType font files in 
the Bakoma4LyX package and then reinstalling them cured the problem. 
However, before I did that I ran file comparisons between the ones in 
the Bakoma4LyX archive and the ones in the Windows font directory, and 
they were identical!

So it appears that rather than fixing overwritten files, the act of 
reinstallation is perhaps just causing something in memory to be 
refreshed (?).  If so, what's getting clobbered, and by what?  Is it a 
LyX issue, or is some other application screwing up one of the fonts (in 
memory only)?  Or is this some Windows pathology?

Any thoughts?

/Paul