Everytime I see a complaint with that symptom it ends up being adblock or some derivative. Run without extensions/addons and see if it happens.
Yup, someone has reported a similar problem in Sept
https://bitcointalk.org/index.php?topic=776487.0 but there is nothing theymos can do to fix it.
redsn0w, if the problem goes away after disabling adblock, you may try the workaround mentioned in that thread.