That turned out to be a problem with the Indic, Thai and other Asian fonts that had been installed along the way in the upgrade. Removing them caused KDM to behave itself.
I had the user face problem etc. Anyway I deleted the .face files and that went away. The memory corruption report has remained.
Still the memory corruption lines kept appearing in the log. Eventually I went to the Kcontrol panel and changed the KDM fonts from "Sans Serif" to "Bitstream Vera Sans". Behold no more memory corruption problems!!! Logs have been clear for a day.
I also had a terrible memory leak in X too. That seems to be gone.
My suggestion is that there is a certain intolerance in KDM towards some fonts...
Also other users work on my machine via LTSP. When they log off X disappears and I am left looking at the left over bootsplash screen CTRL + ALT + F7 returns to normal but this is a pain.
I have had this problem for some time:
I upgraded from Breezy to Dapper
KDE wouldn't work at all!
That turned out to be a problem with the Indic, Thai and other Asian fonts that had been installed along the way in the upgrade. Removing them caused KDM to behave itself.
I had the user face problem etc. Anyway I deleted the .face files and that went away. The memory corruption report has remained.
Still the memory corruption lines kept appearing in the log. Eventually I went to the Kcontrol panel and changed the KDM fonts from "Sans Serif" to "Bitstream Vera Sans". Behold no more memory corruption problems!!! Logs have been clear for a day.
I also had a terrible memory leak in X too. That seems to be gone.
My suggestion is that there is a certain intolerance in KDM towards some fonts...
Also other users work on my machine via LTSP. When they log off X disappears and I am left looking at the left over bootsplash screen CTRL + ALT + F7 returns to normal but this is a pain.