Very strange issue overnight with push email to an iphone 3GS. Got the header (from/to/subject) from one message but the body was the CSV attachment (shown inline as the message body) from another message which was from 28th March and had already been deleted and emptied from the trash!

Luckily the CSV attachment has the date and name of the report as the first line of it, so it was easy to spot the mistake.

Another one to put on the bug list methinks.