I don’t have all the answers yet I’m afraid because I’m still trying to get the best from the camera but with the X10 I’ve found you really do have two or three different ways to try and create the same effect. An example would be what I just mentioned about bright light conditions or another example would be bokhey (sorry forgotten how the Japanese effect is spelt). I have three different ways (and I am sure there are more) I try this. The easiest (but consistently the worst) is to use the advanced pro focus – trouble is that function ruins photos. Here is one example (my GF) of this function – check the blur around arms and hair (nothing I can do to recover this);
The middle option (but getting a satisfactory focus can sometimes be a struggle in strong light) is to use Macro mode and zoom in on the subject about 4-8ft away (best with portrait photography). An example of this – notice clearly defined lines in snuffulificus’s (probably also spelt wrong) hair, much better sDOF option;
Final way – which gets best consistent results – but can be slow to set up (which means you have to be ready and waiting for street shot portrait) is in manual mode and set your Aperture right down to f2 or f2.8 at the long end.
Anyway just some examples and don’t mean to sound condescending as most of you know all of this. BTW the above examples are snaps from the Dubrovnik set as well.
Robenroute – the stalks are cool – the colours good and I like the reflection

Please post more.
BTW – when catching up through a month’s worth of posts I saw some images that really stuck in my mind. They were of a dragonfly with a very skilful use of SDOF. Props to whoever that was – would love to be able to have got some shots like that!