Has anyone had an issue when overclocking that there FM trasmitter .... er doesnt work?

Technical term avoided...

I used the Power Kernel throught the Repo's, and was working away fine, then last night, i went to turn my car into the usual mobile disco, and FM trasmitter, wouldnt work.

Upon trying to save the transmitter as on, it cam up 'FM Trasmitter is unavailble' or something very similar...

Changed back to Nokia kernel, (The Scary Way, with the de-install kernel tab) Thank god it worked, an my transmitter worked fine.

Anyone seen similar happenings, with there transmitter when using these overclocking kernels. It was working fine too, and was truly loving how straight my green line was in battery eye (Lost approx 5% battery if i was lucky in the 8 hours i slept ), with the Load set to ideal.....