I'll take note of the time tonight if it happens.
Also noteworthy is that it doesn't seem to be a problem with isp's or links in between, since you're really logged out from
EU when in happens - I can get back in the game in 10 seconds, no 'Avatar is already logged in' message...
And when there are internet connection disruptions, it doesn't cause a d/c - you just can't do stuff all of a sudden...