is there scp file size limit in esx 3.5?

Hi,

We have upgrade our DR esx 2.5 system to 3.5.

We used FastSCP's to copy the dsk and vmx files off.

After installing some extra disc space on the server we completed a clean install of ESX 3.5 and patched to the Jan 08 level.

The 3 vm's with less that than 163gb dsk file size fastscp copy back fine.

But the last 2 Vm with a dsk file size of 282gb and 379gb time out at around 90%?

FastSCP just reports "Remote server is not responding" and stops the whole process.

Winscp creates a part file that it cannot complete. "Because the Host has not responded for 15 seconds...."

What are we doing wrong?