Randomly Getting Signed Off

Around half the times I try to make a post, I go to click "Post Reply", and get the "you need to be signed in" screen, even though I just signed in a few minutes ago...

This is a known issue; we're not really sure what's causing it.

Sorry for the inconvenience; we hope to have it fixed eventually :|

Okay, well it was just that one day. o-o

I don't know if it was fixxed yet or not, and if it was maybe broke again, but it's been happening to me all day today.