Sorry, I didn't read this whole thread (if I have more time .. when?? biggrin ), but I have found this on internet:
http://www.impulsedriven.com/divdivinity .

My question is:
I have long ago buy Divine Divinity for around 6 euro's I think. That was a patched version,
V. 1.0034A.

Now I see on that link: Version 1.05 !

Is the ONLY difference: "Widescreen" ?
Or are there more things changed?

For example: my V.1.0034A have sometimes some bugs like by Josephina's Staff I must search in a wall! Are these bugs not more in Version 1.05 ???

On 7th of february 2015 : I start a new adventure in the Divinity world of Original Sin,
it's a Fantastic Freaking Fabulous Funny ... it's my All Time Favorite One !