Ok, thanks. I'll give it a shot. Very helpful posts. I didn't even know the extent of the problems the game had (I run vista 64) until you very kindly posted the change log.
Actually, very few of the changes after 1.03 are for bugs or problems in the traditional sense.
1.03 was the last official patch Enlight and Infinite Interactive released; the 1.03.xx series of patches are balance tweaks that a few enthusiastic players made. Not everyone agrees with those balance changes (though if you ask the creators of those patches, they will arrogantly describe the changes as a consensus of all the world's best players). They are mostly flavor and balance changes to suit them whims of the loudest members of the WBC3 forums.
I think some are improve the balance while others are detrimental, and some are just excuses to make the changelog bigger. Everyone I play with uses the last Infinite Interactive patch (1.03), and therefore, unfortunately, we can't include people using the current gog.com download.