Here is a Google horror story, and it's happening to me. Suddenly while using my email in the middle of my work day, I get the message that "Your email has been locked down for 24hrs due to illegal activity". This is not my ordinary email, but my Apps email.
I read all their reasons for the LOCKDOWN and I was in violation of none of them. I am using no 3rd party software, not using 2 machines for the same account, not sending spam, nothing. Yet it happens.
Google is so sure of their technology that they believe they are 100% right when it comes to taking severe & damaging action against a user.
The best part is their support form does not even contain support for Google Apps email. You have to fill in your gmail id in "what if your email id", so I am not even sure if their customer service centre guys will understand what is to be done.
Google, I can tell you that you are sure to lose me as a customer and my whole company if this issue is not resolved quickly and keeps re-occurring.
Update: Google resolved the issue within 30 mins of the lockdown; not sure if this was due to the complaint I filed, or if it is auto-programmed into their system.