The Insight control 7.5.1 will update the other IC plugins to 7.5.1 and will display 7.5.1 but SIM will always show as 7.5..0 at the top.
I did notice that too... bummer. So how can other people confirm they are running HP SIM 7.5 Update 1 if they want to be sure they are protected against the issues described in the Security Bulletin linked in my first post? Which "hotfix" number is the one that is equivilent to 7.5.1?
Running through the updater from the ISO yesterday I did notice that version of the System Management Homepage was bumped up to a newer version so I guess my time wasn't totally wasted.