I think it matters, try developing ruby on rails on windows and you will have bad time. For me only php and java are the two platforms that i have been able to develop with, no matter what os i am currently using.
Getting *AMP running is a pain no matter where you are. On the other hand, I was merrily chugging along with Python stuff on Windows for a long time with only one problem (in order to install native libraries you either need an obscure version of Visual Studio or hunt down obscure downloads from the itnernet).