Windows 8 Pro 64bit
clean 6.4k install with VSR pre 4.4 only
i5 3570K @4.5Ghz
8GB DDR3 Corsair
TimeWarner Cable - 15Mb dwn - 1Mb up (non turbo)
After clicking 'multi' .. i get a 'no sessions found' message, click OK, then they load fine.
*EDIT* The problem still remains. The following appears after clicking the multi button.
'Looking For Sessions' comes up as always for a few seconds, then the following message pops up (but games are then listed fine after clicking OK):

since 6.4k, i now get a bzone.exe - No Disk error (There is no disk in drive. Please insert a disk into drive D) upon launch of BZ2.
Clicking 'continue' or closing the message loads BZ2 fine.
*EDIT* The above error seems to have gone away. It may have had something to do with using CD Burner XP to create a ISOs, not sure.
Managed to play some VSR and stock 6.4k strats (2v2, 4v4 etc). Clients no longer get kicked out of VSR for bad assets (thank you GBD for finding that bug).
I did notice a couple of times the '400% damage' bug occurred. It may have coincided with a resync or two. I am not sure how to duplicate this intermittent problem.
Gameplay was mostly stable with minimal lag aside the occasional hiccup from joiners.
'Faking moves' issues popped up for a lil while off and on causing lag, then clears itself. Not sure if it was a griefer? BZ2 seems to recover from these instances unlike older versions.
Hover ships seem to bounce more in stock (fine in VSR). e.g. jumping a hill, landing hard on nose causes ship to bounce, sometimes repeatedly depending on pitch. ZA did a good job of minimizing this in VSR.
shell server filter buttons seems to work now, except the MPI button. MPI servers are not listed after clicking MPI filter button in shell.
If anything else pops up, I'll let ya know.
P.S. Thanks
