I am having difficulty getting rid of my voicemail notification at the top of my phone. I use Youmail and have checked my messages repeatedly, but don't have any new voice mails. I tried clearing the cache under my dialer in the manage apps menu, but it is greyed out and isn't an option for me. I also tried receiving new voice mails and deleting them but this also did not fix the problem. Anyone have any suggestions for me? I have a Droid Bionic.