Hi,
I found a really great KB for P2V migration with Vconverter. I found 2 very interresting settings :
1 – Turn off SSL
2 – if you have more than one disk not Raid, but logical disk : use data connection per task settings.
For more detail and how to:
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2071014
Cheers,