I've been using 2.3 for about 3 months. Up until today I've had no issues. Today I've had the system become unstable several times. While doing routine editing the screen will start showing green horizontal lines and the cursor disappears. Evetually it appears to be locked up. I re-boot , relaunch 2.3 and I get control back for about 10-15 minutes. Then it repeats the instability and locks up. Not knowing if its related to 2.3 or to the PC operating system I re-booted and did not launch 2.3 and so far ( 1 hour) I have had no issues. Has anything similar to this been reported?

Sounds like you were having an issue with your pc, correct? Can you email me privately if there is an issue?