It looks like the problems with Gmail service keep on coming as I wrote about here and here.
It seems that things are worse for some users than others. I usually only have outages for less than half an hour, while other people are reporting not being able to access Gmail for days.
To the people who are having REALLY long periods without service: Where are you located geographically? North America? Europe? Middle East? India? I wonder if that has anything to do with it?
I guess the best idea for now is not to use your Gmail account for any work critical information. At least when you're paying for a service you usually have someone you can call up and report the problem to :-)