Question: why should I kill Adobe Acrobat? I actually use that to send and receive large documents to-and-from work, and don't understand why I should get rid of it?
By "kill it" I mean don't have it as an automatically starting program. You don't need it and it is one of those apps that likes to contact the internet for updates etc. You don't need it running all the time..........if you double click on a .pdf file your file associations will do the rest.

I have seen problems where v6.0 has terminated the internet connection, so some sort of conflict is possible in certain circumstances.