Comment 88 for bug 1413446

@Vitor, I think the bug that you are experiencing seems similar, but it is a different one than the one from this bug report. See http://en.community.dell.com/techcenter/os-applications/f/4613/t/19682246

I am experiencing it as well, and I haven't found a solution yet. I hope Dell will have a fix soon, in their forum they mention that they are looking for a fix.