grunt-php task springing open multiple browser instances - gruntjs

Question

I'm building a Gruntfile.js.
I'm trying to create tasks for responding to php requests.
Other tasks include live compiling compass/sass and live-reload.
I've hit an interesting snag:
When I start grunt, I can see in the terminal that the watch tasks is running, and that the php server is running: I get messages in terminal about certain files not being in place.
Now heres the thing... a couple of seconds after I start grunt, firefox windows start opening. (I start the task without firefox running at all. I generally use chromium and chrome).
New windows keep opening. ff messages about firefox crashing sometimes pop up. I also get windows popping up telling me that my ff profile is inaccessible - which is what I'd expect if I try and run 'firefox' from the terminal while ff is already running.
They keep popping up until I stop grunt from running. They all close immediately when I stop the task, by Ctrl-c from the terminal.
What could be causing this?
Here is my gruntfile
module.exports = function (grunt){
grunt.initConfig({
compass : {
dist : {
options : {
cssDir : 'css',
sassDir : 'sass',
debugInfo : true
}
}
},
php :{
dist : {
options : {
keepalive : true,
port: 9000
}
},
watch : {
files : ['*.html', '*.php', 'js/*', 'sass/*', 'css/*'],
tasks : ['compass'],
options : {
livereload: true
}
}
},
});
grunt.loadNpmTasks('grunt-php');
grunt.loadNpmTasks('grunt-contrib-watch');
grunt.loadNpmTasks('grunt-contrib-compass');
grunt.registerTask('default', ['php', 'watch']) ;
} ;

Answer 1

Your watch task specifies that you want to use livereload - so, that's (kind of) expected, right?
See here:
https://github.com/gruntjs/grunt-contrib-watch#optionslivereload
http://livereload.com/