I notice people hi-blinking my friend's Prius II as well. I don't think they are adjusted or aimed too high, it's just a design issue that causes them to appear bright to oncoming traffic. A quick blink of your own high beams usually 'educates' the other driver about what high beams really look like, but I'm afraid I haven't heard of a permanent solution yet.

2001 Prius Photos       2005 Prius Photos
1992 Mitsubishi Delica Diesel-WVO Hybrid Photos