Seems like the IM wars aren’t over yet. Further to my postings about Yahoo and Microsoft Messenger apparently blocking third party chat aggregators like Trillian, seems the latter’s patches don’t seem to be enough to keep folk connected. CNET reports that Yahoo has begun blocking Cerulean Studios’ Trillian software from communicating with its own instant messaging software as part of its plan to limit third parties from piggybacking on its service.On Thursday, some Trillian users began reporting an inability to communicate with their Yahoo Messenger contacts. A Yahoo spokeswoman on Friday morning confirmed that Trillian users’ inability to access Yahoo Messenger was the result of recent policies put in place by the Web giant. A day after last week’s Yahoo announcement, Trillian released software patches that were aimed at allowing it to continue accessing Yahoo and MSN buddy lists. But as of this week, CNET says, those patches do not appear to be working.