Okay since I couldn't find out how to change how frequently my mail app fetches mail (more than every 15 minutes) on the 2.0 firmware i decided to do it myself.
As you should all know apple changed a lot of things in the 2.0 firmware. Thats why the previous method is not effective on 2.0
But there is a new very similar way... brought to you by me (todanator)
1. Okay first you have to have a jailbroken ipod/iphone with openssh installed.
And have your fetch data settings set to 15 minutes.
You must then log into your ipod.
I prefer to use Cyberduck
(if you don't know how... look it up on youtube)
2. You must then navigate to the directory....
"/private/var/mobile/Library/Preferences"
3. Then go to the plist file called com.apple.persistentconnection.plist and download it to your comp.
4. if you don't have something that lets you read/edit the plist already you can go to
Convert Apple Property list from binary to text XML and convert it into a readable file.... and no you don't have to reconvert it back.
5. once you've got it open with something, look for the
<integer>900<integer>
6. the 900 is the seconds between each time mail goes and gets your mail
so you can change it to something like 300 for 5 minutes or 120 for 2 ect.
7. once you've edited that save it and replace the old plist file with your
new and improved one.
INFO
If you check your fetch settings it will say manual... its lying to you.
test it out and you'll see!
I'M SO PROUD OF THIS! I'VE ONLY OWNED A IPOD TOUCH FOR 4 DAYS AND I HAVE NO XCODE EXPERIENCE AT ALL! I BASICALLY DISCOVERED THIS BY LOOKING THROUGH EVERY PLIST FILE I COULD FIND LOL!