Switches are unlikely to "blow" unless they take more current than they're designed for - you have probably wired the new light incorrectly and need the services of an electrician.
The location of the switch is immaterial - how you wired the ceiling is the important thing.
When you say "two way switch" do you mean two switches controlling one light fitting or two switches on the same plate each controlling a separate light?
You may very likely have had a fuse blow or a breaker trip if a switch has been destroyed - but you don't mention this.
Take care...
Peccavi
April 2009