|Click to enlarge|
The solution is simple and effective and untill they get their finger out I suggest you log out of blogger, then go to the log in screen and see if the "stay logged in" box is ticked. If so untick it and log in manually. See example on the left. (sorry the pic is in dutch but you get the idea)
Whe you have logged in like this you can comment on other blogs again.
This work around is a bit crap but it works. spread the word because blogging without comments is no fun..