I was on the opposite end of that. My major at university was computer science. An area dominated by Indians, at least in education, eh? One of my first classes was a huge shock to me. The prof was a relatively young Indian guy in his 30s. And I could not understand a single word he said for the entire hour. I left class thinking "I'm going to have to drop out of this class. Hell, if all CS is like this, I'm going to have to change my major!"

Some of my other profs were also Indian and I couldn't understand them either!

Luckily, I decided to tough it out and within a few weeks, I could adapt to their speaking cadence and pronunciation, and of course after that I could understand them well. Looking back, it was a great experience but man, that was a bit of a shock seeing how different two major dialects of English can be.

Globalization is having a similar effect here too. A good example might be the v sound. Older Japanese people can't say it at all. They will say biolin, for example, and struggle to produce a v even if you show them and they try to copy. Younger people, however, have no problem saying violin, with that perfect v.