Forgive me for reviving a dead thread, but has anyone found a solution to this? I'm getting it every few hours, on the same machine, without closing my browser (Chrome) and without clearing cookies or anything of the sort. It's been happening 5 or 6 times a day for the past couple of months and is starting to get beyond a joke. Between having to wait multiple days for the system to recognise that I've cleared my inbox (and bouncing emails in the process due to my storage being '100% full', even after I've removed half the contents, which proves the system can't math, apparently), having a small storage space to begin with, and this issue, you'd think they'd at least try to correct it.
