I logged off briefly when I cleared my cache just now, and it doesn't matter how many times I login, the site doesn't think I'm logged in. It sounds like cookie shenanigans to me, or something to that effect. Thankfully tapatalk is still working so I'm able to let you guys know.
Sent from my Galaxy Nexus.
edit: once i checked "remember me" it remembered the session, but still. You shouldn't need to do that to stay logged in heh.