I find this annoying as well, but I don't think there are any real settings to actually disable it altogether. I've simply tweaked the timeout settings so that it's not going dark every 20 seconds. Try that, it might help.
Given the E75's relatively small battery (compared to the E71), the power save settings will help in the long run.
The PDA Doc!
Golf season is here! The only sport where athletes (if you want to call them that) actually earn their money instead of getting it regardless of whether they actually perform!