I travelled through MAN around 5 weeks ago on a Monday morning hop down to LHR.
I use airports every week, usually on Mondays and Fridays. I have never spent 30 minutes in a security queue anywhere in the world bar MAN T3 - generally 15 minutes max. Getting to an airport 2 hours before a domestic (in my case) or European flight should be more than enough. On that occasion, there wasn't much time before boarding after I got through the queues and I had no checked bags either. Its not good enough.
The staff were also relatively abrupt and threatened full searches if a passenger broke the rules.