Serious bug,Mail hangs(uses all RAM)

[Benkovitch]

Anyone having same issue ?
Mail app hangs,freezes and uses all memory and processor %.

Look how many people have same problem here:
https://discussions.apple.com/thread/6611183

 

[indychris]

Yikes! I live and die by my e-mail. Definitely no Yosemite in the near future for me.