Stereo & Electronics - HID headlight problem - Pass. side flickers.

I installed a set of HID's a year and a half ago, and have had no problems up until now. Whenever it got cold in January, my passenger side headlight will randomly turn off. When it does this, I can temporarily fix it by turning the headlights off while the lights are still popped up, and then turning them on again. Sometimes this will fix the problem for the rest of the night, and sometimes it will happen again. The problem is intermittent, but has gotten worse. Tonight while driving home (2 miles from campus) it happened 3 times.

Any HID/Electronic experts know what my problem could be?

Coulb be the ballast or bulb going out. Swap the bulbs from one side to another. This will help you determine if the ballast or bulb is bad.

Alright, I was thinking about trying that, a bad ballast seems to be the most probable cause. But i wanted to post here first anyways to see if anyone else has also had this problem.

Anyone else have or have had this problem and found a solution?