Blogger's performance has been sluggish this morning. The culprit seems to be a bunch of spammers creating spam blogs at a high-rate. We are locking the spam creators out from Blogger and monitoring the system to see that there are no other issues. Thanks for your patience.
Update 2:55 PM (PST): This issue has been solved. Please report publishing problems to us if you still see them.
Update 10:00 PM (PST): Some users are still experiencing publishing trouble, we are working on figuring this one out. Again, apologies for the the continuing problems.
Update 10:44 PM (PST): We found the cause of the publishing problem, it's those spammers again. Normal publishing will be restored shortly.
Update 11:00 PM (PST): Publishing should now work normally.