CFDude, I had LOTS of problems when making the displaylink monitor the main screen with Dock/menu. Once I stopped that - most problems stopped. I do still get a flood of errors whenever I wake the computer from sleep (and possibly some weird crashing of window server and subsequent automatic logout loosing all my work that was on the screen
- but it still mostly works.
In all fairness I do NOT know if those 2 are related - but I never had the Mac log me out automatically before - and it started only happening within days of setting up 2 displaylinks in addition to my regular external display.