Just found the answer to allow XP32 vsphere client to connect to 5.5 and have installed 5.5, USB passthrough is now persistent:
/etc/vmware/rhttpproxy/config.xml
[code]
<vmacore>
<ssl>
<cipherList>ALL</cipherList>
</ssl>
</vmacore>
[/code]
Restart the service:
[code]
/etc/init.d/rhttpproxy restart
[/code]