Gmail inbox shows "4294967295"?

The Gmail inbox on my iPhone now shows 4294967295. Obviously, I do not have that many new messages... in fact, I have no new messages.

I have tried to delete the Gmail account on my iPhone and re-add it. This did not fix the problem.

I have tried syncing my iPhone with iTunes. This did not fix the problem.

For what it's worth, a Google search says that "4294967295" is the highest number you can get using 32 bits. Not sure what this means or why my inbox is showing this number.

Any help would be MUCH appreciated.

Thanks.