Following the install of build 14931 onto my Samsung NC110 netbook, all system type screens display wrongly.
Instead of text, all are just blocks, usually white.
For example, the logon screen, start menu, control pages, setting pages, notifications are all unreadable.
Programs/apps continue to work OK.
Screen grabs dont produce a faithful copy of the screen display, now usually blue blocks...
A grab of the settings screen included.
All was OK before the 14931 update.
David