Default Hotmail Syncing Problem!

it's been few weeks now that i am UNABLE to Sync my Email (Calendar Syncing works great) through Activesync and Exchange Hotmail Account!

I used also a HTC Elf and the same problem occured

Error 0x80070006

Any ideas?
How can i contact Hotmail and inform them?

EDIT 1:
Syncing 1 week email work again perfect.The problem is when Syncing ALL EMAIL