django request.user.is_authenticated() isn't returning true after page refresh (sometimes)

django request.user.is_authenticated() isn't returning true after page
refresh (sometimes)

I have a registration form. After it is submitted, the page refreshes and
I get some information back based on request.user. Sometimes
request.user.is_authenticated() is returning True and everything works
fine.... and sometimes False seemingly randomly.
I appreciate any insight into why this might be happening.
Registration form code
$('#reg_form').submit(function(e) {
e.preventDefault();
e.stopPropagation();
var serializedData = $(this).serializeArray();
var names = serializedData.map(function(r) {
return r.name;
});
var index_user = names.indexOf("regusername");
var index_pass = names.indexOf("regpassword1");
var index_email = names.indexOf("regemail");
var data2 = {};
data2["username"] = serializedData[index_user].value;
data2["password1"] = serializedData[index_pass].value;
data2["password"] = serializedData[index_pass].value;
data2["password2"] = serializedData[index_pass].value;
data2["email"] = serializedData[index_email].value;
console.log(data2);
var serializedFormData = $(this).serialize();
$.ajax({
url: window.url_root + '/accountsjson/register/',
type: 'POST',
dataType: 'json',
data: data2,
success: function(data) {
console.log(data); //remove
if (data.hasOwnProperty('success')) {
console.log("successful registration detected!!");
utils.loginAfterRegister(data2);
$('.register').slideUp();
$('.frame').hide();
} else {
utils.showRegister();
}
},
error: function() {
console.log("ERROR posting registration request. Abort!");
},
});
Function called from loginAfterRegister which has the refresh
function sendRating(rating, reload_on_return) {
$.ajax({
type: "POST",
dataType: 'json',
url: window.url_root + "/savecommentrating/1/" + rating.cid +
"/",
data: {
"rating": rating.r2 / 100.0
},
success: function(data) {
if (data.hasOwnProperty('success')) {
console.log("data was sent!");
if (reload_on_return) {
location.reload();
}
}
},
error: function() {
console.log("rating didn't get sent!!");
}
})
}
mobile function within views.py
def mobile(request):
create_visitor(request)
os = get_os(1)
disc_stmt = get_disc_stmt(os, 1)
return render_to_response('mobile.html', context_instance =
RequestContext(request, {'url_root' : settings.URL_ROOT,
'loggedIn' :
str(request.user.is_authenticated()).lower(),
'client_data':
mobile_client_data(request),
'client_settings':
get_client_settings(True),
}))