GNS430W software 3.0 upgrade

I had the upgrade installed a little while ago and it seems to have
impacted my screen. After the radio has been running a while, I
notice that when I change pages, the previous page seems to have
'burned in' to the screen for a few seconds and gradually fades away.
I also found that on startup, especially if the radio has been used
in the previous hour or so, the screen was nearly impossible to read
until I set the display settings contrast manually.

I contacted Garmin tech support and they said they'd seen something
like this with the upgrade. They had me set the contrast as "auto"
and set the contrast to a number around 095. They said it's best to
leave the contrast as auto, since apparently it needs to be constantly
tweaked as the screen heats up, but that the new software sometimes
fouls up the reference point, setting it too high.

I set the contrast to 095/auto, and now it works at startup, but I
notice that after the unit's run a while, the 'burn in" is still
there, although it fades after a few seconds. I suspect that either
the new software makes the unit run hotter, or the new software has a
problem adjusting contrast as the radio heats up. Has anyone had a
similar problem?

BTW, the radio is installed in a 1976 Cardinal RG, 14V electrical
system.
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