It's not just Gmail... Google is either doing something to their servers or their system got screwed up somehow. Started the other day with Maps and ever since just about every service other than search is going in and out (or off and on if you prefer)... Last night Gmail was being slow, today GV is being ridiculously slow with SMS.
Hope they get everything fixed soon.
? wonder if they are getting bogged down with all the new Android phones that have been sold.