Mail issue need help

I have two issues with mail since the upgrade. the first is that my on my mac folder shows up twice on in the mail window and it's acting wierd. the first instance shows up under the smart mailboxes and the last at the end. they are exactly the same. if i click the arrow at the first instance it closes the second but won't open it.

the second is my RSS feeds aren't showing up and yea i set mail as the default rss, when i add them nothing happens.

and the third is i have one account that has two email in it. i can not delete them. if i try and delete them they turn grey, and then turn back to black and i can't delete them at all.

 

i'm having that issue too, i have checked the auto sort junk but it still shows up in the inbox

 

try opening preferences and checking leave it in my inbox. close prefs reopen it and check move to junk folder

 

i having another issue. It's about the RSS reader in mail. First i have two macs and .mac and i want to know if rss can be synced in mail through .mac. and second, my rss was showing up in mail and now doesn't. i have no idea waht happened?