My issue has never been logging on (my profile is set to always stay logged on), but within the past few days I've had issues with the forum "timing out" - I get a "404" or page not found error on the first few attempts, but after a couple of retries it'll open up as normal.
I'm aware that this error can be caused by connection issues anywhere along the path from me to you, but, this forum is the only site I'm having the issue with, so I'm fairly certain it's not my end.