WordsnCollision - 2:58 pm on Mar 31, 2010 (gmt 0)
Not to worry, everyone, this has happened before. Money will NOT be withdrawn from your accounts. You don't have to adjust your banking info - or do anything at all. Google just uses this scary procedure so that their own accounts will balance when all is said and done.
The payment amount was revised to a lower number because Google is reconciling the amount in US$ they actually paid out last week. Be patient: you'll soon see a small extra payment that will make up for the amount we (in Canada, at least) were short-changed last week when Google accidentally reversed the exchange rate.
To repeat: Don't be scared, don't do anything, all will work out in the end :o)