Is this possible? Also, and it may be related, K-9 shows several unopened messages but only one is actually unopened in K-9. Almost seems like it is showing gmail apps unopened mail totals.
You have to turn off sync for gmail in your gmail account. Menu, settings, Accounts & sync, tap on your gmail account, remove the check from Sync Gmail. The other problem might be related to the sync of the gmail account folders.