there was something about evolution being vulnerable a while back, but all you had to do was upgrade
most people use thunderbird instead though and i don't use any of these email apps myself, rather use yahoo or gmail accs so i uninstall all of the evolution, thunderbird, (or outlook on winblows machine, actually don't have any internet capabillities on those lol)
i don't see how linux os = indefinite number of... blah blah blah though i've never had that happen on mine before (except when i was fucking with things i shouldn't have been doing :-] hehehehe) and i'm not even gonna talk about my experience last week when i tried booting xp to run win movie maker lol - that was ridiculous