Think there was a bit of a misunderstanding here. All three programs work fine with dual-core systems .The quad-core thing was never an issue, it was only an emphasis.
My main point was that they are only installable via sourceforge download and not being technically minded I have difficulty getting them up and running. Once they are running it's no problem .For non-techies like me installing certain third-party software can end up just giving us a headache particularly if the mods don't know the applications.
Sorry guys I wasn't trying to give anyone else a headache.
I haven't tried U.E.3.0 yet as I am waiting for a DVD from linuxcd.org to arrive in the post. If anyone else doesn't trust their internet connection to download iso's without interruption, Linuxcd.org is the place to go. While I waiting I am playing around with Israel Remix Team's revamp of Ubuntu Multimedia.Admin-Amir & the gang have done a great job with it so that's two new distros for me to play with.All this excitement-just don't know if I can cope!
All that I am or seem is but a dream within a dream.