Bug @ iphone 4.0 OS!!! Can't access the login page!!

I upgraded my OS from 3.1 to 4.0, and bug happened!
I can only access the page I've logged on, but I can't get into the start interface!

Which means, I need to switch off my network, and let the login becomes time out, and then go into the start page.

Because of this bug, I can't participate the PVP game!

Who can help to resolve this problem?

best regards
qiangy

yes you can, give me a sec to type it up

ok, i explained this earlier on world chat, n harm in me doing it again =]
IOS4 uses multi-tasking, this allows your ipod to run excess apps,without "wasteing" any extra battery life.
Double tap your home buttin and you will see alot of apps you have opened up. Look for the haypi kingdom app and hold it down (like your trying to delete it)
All the apps in the multi task bar will appear to shake, with a little red X in the top left corner of each app. Tap the X on the haypi app and the next time you open it you will have the main screen up.
So you can start PVP by selecting 'My Account ---> PvP Start' ofcourse, only when the new competition starts. Best of luck my friend
Hope i helped,
BoB

pls dont double post...

Theres an Edit button for a reason