I searched this issue and found many forums discussing the topic, but no solution. When using PS CS6, the arrow keys randomly stop working when navigating around in text. This is extremely frustrating. Per other discussions, and my experience, there doesn't seem to be a constant trigger. Saving the PS file when it happens SEEMS to fix it - at least temporarily. It's been happening off and on since I upgraded.
Adobe reps (they're say "employee") monitoring the photoshop.com forums suggested the fix is to close all other apps. No one works that way. Chrome (or other browsers) were speculated to be the cause. but I just had this happen without any browser open.
Any insight would be greatly appreciated. It's the simple things that cause the most frustration.
CS6 upgrade form CS5 Premium
Lion 10.7.4 / 16G / i7 Intel
Safari / Chrome
This is a known issue, especially on OSX 10.6 and above like you mentioned yourself.
We're all waiting for a fix from Adobe on this one.
Nobody suggested that closing other apps was fix - that was just a test to determine which apps were causing problems with event handling that prevented Photoshop from correctly handling the key events.
And if there were already posts on this topic, why did you create a new topic on the same thing?