deep zoom

64 x 48, 4096, 1x, deep zoom On eng-ckorda: ~5 secs per frame, ~640 pixels per second, or 1.56 ms per pixel.

firewall headaches

Server should allow port to be specified, via command line arg.
Also need arg that specifies whether to install UDP server or not; this helps with vista firewall because even if you have a group policy exception for the TCP port, the UDP port will still trigger the firewall and cause the server to be blocked anyway.

In Vista, sometimes you have to rip the entries manually and then reboot to get the firewall to forget about a program. Firewall entries live here:
HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\FirewallRules

pipes versus sockets

On Z net:
pipes (one way transfer 4K packets): 18 MB per sec
sockets (client sends small, receives big): 20 MB per sec

LAN performance check:
lPerf
QCheck