LanMan Server Registry Keys in Windows 2003 64 Bit

These are suggested LanManServer registry settings for a XenApp Environment.
I have these keys running in two live environments running XenApp 4.5 on 2003 R2 64 Bit

The Larger environment (32GB RAM C Class Blade) has 120 concurrent users on a daily basis and ive load tested upto 320 concurrent users

The Microsoft article kb324446 recommends these settings.
http://support.microsoft.com/kb/324446

HKLM\System\CurrentControlSet\Services\LanmanServer\Parameters\MaxMpxCt
2048
HKLM\System\CurrentControlSet\Services\LanmanServer\Parameters\MaxWorkItems
8192 or 65535(set on the larger environment, not sure why)
HKLM\System\CurrentControlSet\Services\LanmanServer\Parameters\MaxRawWorkItems
512
HKLM\System\CurrentControlSet\Services\LanmanServer\Parameters\MaxFreeConnections
100
HKLM\System\CurrentControlSet\Services\LanmanServer\Parameters\MinFreeConnections
32