I have never come across such issues. Although I am a Hindu by religion, I have more muslim friends for one reason or another. I cannot understand why there is any problem. We are people of different types and we follow different customs. If people who follow similar customs stay together, I do not see any such problems. Sometimes vegetarians do not like to stay near non vegetarians. I can understand why, because if there is a big shark in the water, u cannot expect the fish to leave the sea. Also, I feel that if you are ok you can live in a hindu colony even though u are not muslim. The most important thing in this world is humanity.