I'm using a couple of mods, but the error was there before I installed them. And yes, it is only the type9 sub it is in, a VIIB or C, IIA or a XXI the light is allright.
My graphic card is a GeForce TI 4200.
And it dosen't matter if I'm under attack or just cruising the seas. It's always there.
http://www.airsoftzone.dk/asz_pics/S....11.52_300.JPG
As you can see one of the bulbs is still on, but that is because the intervals isn't synchronized.