If your using Microsoft Windows hosts with XIV, there are minimum required Microsoft hotfixes.
They are listed in the Host Attachment Kit (HAK) 'release notes found here: HAK Release Notes
However I have learnt that some additional fixes are recommended, particularly if your planning an XIV firmware update:
•Windows 2003: http://support.microsoft.com/kb/950903
•Windows 2008: http://support.microsoft.com/kb/983554
So please check your systems to see if these hotfixes are installed.
If not, you should plan to schedule them on your next patch Tuesday.