just fitted my HID set today and luckily no problems yet but not had it for a good test run yet but seems to be fine.
the one thing i did do was to extend the earth back to the battery earth point not sure if it helped or not or was i just lucky.

Also did you have to take a little nick out of the bulb holder so the bigger bulb can go trough? i did but the old one should still work if i ever have to go back

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2010 blue XTX now with both Kev fueling and o2 mods, K&N stage 1, 30mm up and back handle bar risers, HID kit, 25mm lust racing drop kit, mini running lights,pipe werx exhausts & denali soundbomb horn