Sadly, I'm also not really digging 'Mirror's Edge' either. Maybe I just don't have the knack but it seems to take a lot of trail and error to get around without becoming street pizza and I'm just not having a lot of fun in the process.
It's been a while since I played it. I do recall it had a bit of a learning curve.
The one bit of advice I would give is, don't try to fight very much. If you're taking on more than one guy, running works better most of the time.