Receive activities inside a Flow activity

[Vinay Vijay]

Hi,
                I am having 2 parallel branches in a flow activity. Inside each 
branch I have a receive activity. When the process is executed, the activities 
in each branch are executed in parallel, but as soon as the receive activity is 
started in one branch, the non-executed activities in other branch are not 
started till the receive activity of the first branch is completed.
                Is this the intended behavior? If yes, can you please throw 
more light on why is it so? I am using ODE 1.3.5. Thanks in advance.
Regards,
Vinay