come on,sweeping generalisation there Darius, If people are given a choice between Greg and Grzegorz they will go for Greg,
I was just kidding there.
Still, sometimes I am surprised at the difficulty people have in pronouncing names. Mine is Dariusz. It confuses the heck out of so many locals here. If I drop the "z" then it makes it kinda easy for them. In the end, I give them just one try and then I suggest they use a name they are most comfortable with, and from then on I react to anything weird that starts with the letter "d" ;)
My wife's name is Agnieszka. As a nurse, she has to wear a name tag so by now she's used to people spending more time trying to read it than it takes them to read an entire sport section in the local paper. Pronouncing it to others doesn't help a whole lot, so she reacts to Agnes (she doesn't like that one), Aggie, Ageeshkah, Agzheeka and a host of other I can't even remember, but they start mostly with "ag"
Funny incident with an East Indian guy who asked me about my wife's name. When I pronounced it he froze for a second and then smiled. In a hindu dialect he spoke (related to Sanskrit) agni-shishka means "trial by fire"