what happened? help!

I have never come across that error myself but I think it
might be a
Sector 4 error. You are probably using some script or app
which is
prohibited in Gmail and Google has locked your account down.
I think
the account is unlocked in a couple of days. It might be
useful to find
out what caused your account to lock down and try to avoid
that action.
Someone with more experience with sector 4 might be of
better help. You
can also check the forum for sector 4 error discussions.

Usually 4 days, according to another disscussion I read in
google
groups about sector 4