Incoming emails keep repeating in Apple Mail
I have had all kinds of probs with Apple Mail lately, mainly to do with getting to see all my POP3 email in Gmail on my PC at work. This stopped working last week, now it is miraculously working again. Great!
But last night/this morning vast amounts of email from last few days repeated themselves, spent ages sorting througgh them and deleting repeats while being careful to watch out for new mail. That has thankfully stopped too, I have no idea why it started suddenly, or stopped or why above Gmail problem righted itself.
But now all emails are coming in twice, not as bad as above probs but annoying. They do not repeat in Gmail or mail2web.com but I use mainly Apple Mail at home. Can anyone please suggest a solution?
It must be either something in Mail Preferences or in Gmail settings. I have Mail 3.6, most Help is for 4.0 (can and should I upgrade, by the way, I uploaded some kind of upgrader but it didn't want to install).
Thank you.
Michael
iMac, 1 GHz PowerPC G4, 1.5 GB DDR SDRAM, Mac OS X (10.5.8), iMac Model Identifier: PowerMac6,3 Processor Name: PowerPC G4