There's been a lot of people with this problem, myself included on my old accord. An easy way to prevent it though is every couple months, put the antenna up and wipe it down with some detergent/degreaser, i use dishsoap. works fantastic, then just get a rag to wipe off the extra soap and that's all there is to it. It'll take less then 5 minutes, well worth the time if you ask me.