New hotfixes for Citrix, just upgraded to the latest versions.
the msp.cmd is as always quite simple
msiexec /p PSE400W2K3R01.msp /passive /norestart /L* patch-%computername%-PSE400W2K3R01.msp.log
msiexec /p PSE400R01W2K3027.msp /passive /norestart /L* patch-%computername%-PSE400R01W2K3027.msp.log
msiexec /p PSE400R01W2k3011.msp /passive /norestart /L* patch-%computername%-PSE400R01W2k3011.msp.log
BTW if you have the PSE400W2K3029 installed you need to remove it before you start the installation