[Ken Case]

We're very sorry for this! The issue seems to be that the XML parser in iOS 7 has introduced a new default size limit of 10MB. We saw this issue in some early developer preview releases of iOS 7; but Apple fixed the issue in later releases, leading us to think it was resolved. Unfortunately, now it appears to be back in the final GM.

This doesn't affect everyone, obviously—but if you have a number of large notes in your task database (or a lot of tasks!), you could easily end up exceeding that 10MB limit. (Attachments are stored as separate files from the XML content, so the size of your attachments won't affect this limit.)

There is some (new) API we can use to increase the limit when we're on iOS 7, and we'll be updating our version 1 apps to use this API when available. We'll submit these updated version 1 apps to Apple ASAP.