I searched throught the 5.2.3 source code and found this javascript file which creates an URL '/poller/...':
portal-web\docroot\html\js\liferay\poller.js
1//....
2
3var _url = '/poller';
4var _receiveChannel = _url + '/receive';
5var _sendChannel = _url + '/send';
6
7//....
8
9var Poller = {
10 init: function(options) {
11 var instance = this;
12 instance.setEncryptedUserId(options.encryptedUserId);
13 instance.setSupportsComet(options.supportsComet);
14 },
15 url: _url,
16
17//....
I also find these error messages in my apache access log file when i try to run the social office 1.5b (5.2.3 based).
IMHO, this poller will not run correctly when running the portal in a non-root context (e.g. /extranet).
With the following change, the poller url should be correct
1var _url = themeDisplay.getPathContext() + '/poller';