Hanging out in malls in the most popular activity of Jakartans so this is the place to go to see and meet lots of different woman.In my opinion it is over-rated: To be honest, the guys I know who met girls in Malls were often disappointed because they found out the girls were interested in $$$. Good girls are usually quite shy to be seen with foreigners in public and they will probably be a little distant, especially in front of their friends.
I'm not criticizing girls in Blok M, but you have to admit it is a lot more difficult to connect with them, apart from the physical attraction.
For tricks about meeting girls in Jakarta bars & night clubs, I wrote a special post available here: Which bars to find girls in Jakarta?
and you can also read my list of Ladies' nights in Jakarta. Where do you think are the good areas to find "normal" girls in Jakarta?
It may be a birthday party in Dragonfly, a wedding, a dinner between colleagues.
Don't be afraid to pass the word around you that you are fed up with the bar scene, and that you are looking for a serious woman to be with.