PP closed my account

[GH.]

I can't log onto PP - it says my account has been closed. I called customer service/investigations and they said that my account was under "routine investigation" and that I would be able to log in 24-48 hours later. Is this anything to worry about? I have a rakeback account. I also have won a relatively large amount of money recently, running well while multitabling 15/30. I definitely do not cheat, although recently someone did call me a bot, even though I play pretty LAG.

So, is this standard?

Edit: my friend who has the same affiliate as me also had his account "closed". Same problem.