Lion drag & drop hot corners not working

Hi there,

I was wondering if anyone had this problem.

I am used to (in SL) use hot corners to drag & drop files.

Click and drag a file to hot corners for desktop or exposer to drop it to an other window or desktop.

Since upgraded to Lion, i can't use any hot corner while draging a file! (working fine without draging)

Same for droping files to dock's icon when in hidding mode!

It was one of the best features from osx making workflow so easy...

If it is a choice from apple, it is a big mistake!

Thinking of going back to snow leopard...

ps: Upgraded from up to date snow leopard. Haven't try clean install.

MBP unibody 5.2