Lets see, UCM logins quit working randomly, seems like a new jboss patch is released every couple of weeks to fix that yet it never does, phone management with UCM is a joke, and so on. The sheer size of the Linux service packs and time to apply them is ridiculous. This is just my opinion, so 7.5 fans can put the flaming arrows away. On an upside paychecks are bigger thanks to more overtime hours keeping the systems running. On a downside the customers see me as the representative of Avaya and their poor software.
I look forward to days when I get to work on anything 5.5 or below.