Just noticed on my AdSense Payment History Page, that recent check is issued with crazy exchange rate of 1:1!
After visiting AdSense help Google group, I have noticed that many publishers, mostly from India are facing same problem. This particular message is receipt of AdSense team being aware of the problem. So all I can say, do not get panic!
The other question remains whether you will get a small check in local currency at exchange rate of 1:1 or is it just problem with web-interface?
If you are an experienced AdSense publisher, then you must have noticed that every Payment Details page shows “Payment Number”, which is in this case is blank. So I think payments are already processed correctly and soon web-interface will show accurate information.
Anyway, if you get check at exchange rate of 1:1, I am sure difference will be credited back to our account for sure automatically by Google AdSense team.
Point of writing is, do not get panic and do not flood already busy AdSense team with support requests related to the issue. They are working on this (proof).
Just in case, you need follow-up, keep watching this thread.
Update: Just received this response from Google AdSense Team. (Sep 27)
We’re writing to let you know that your AdSense account is displaying an incorrect exchange rate for your most recent AdSense payment issued on September 23, 2008. While the exchange rate is incorrectly listed as 1:1, please rest assured that your payment has been issued with the correct exchange rate. You can expect your check to arrive according to the normal delivery time, within two to four weeks.
If you normally receive communication from us in a language other than English, we will provide additional information in your preferred language next week.
We apologize for the inconvenience and appreciate your patience.
The Google AdSense Team
1600 Amphitheatre Parkway
Mountain View, CA 94043