For LR that has 11.50 or 11.51 get the LR Service Pack v11.52 (LR_03142) and if you have machines that are Stand Alone LGs get the Load Generator Service Pack v11.52 (LRLG_00026), those would be the only ones you need.
The rest are stand alone patches or additional programs.
Link to SP2: http://support.openview.hp.com/selfsolve/document/KM00424389
Regards,
Mario M.
