Lion Update 10.7.5 not working

Something is not correct.

I installed Snow Lion with all the updates before attempting to install Lion which installed to 10.7.4 with no problems when I got this gem.

I than took my computer back stating something was wrong and they gave me another new MAC PRO and it did it again.

I than purchased a new lion thinking that something might have gone wrong in the download and it did it again so I purchased the USB lion from amazon and tried it again and now I am fed up , I am at a loss , I also went directly to the Update website where none of the links or gateway no longer work,

Seems to me that LIon has been washed am I correct ??

I am also getting a malware tool update that I have never seen before on every computer I have tried now , something is wrong.
Please advise . please