My camera is nothing fancy, the Panasonic FX75 (mid-range point-and-shoot), so maybe it is just a lack of processing power that would be improved with a more powerful processor in a better camera?
I went and looked up your camera. It's got a 1/2.33 inch sensor.
This equates to a sensor about this big:
(this is actually for a 1/2.5 inch sensor; but you get the rough idea)
This is what my current camera -- a Rebel XSi with a APS-C sensor; the lowest level of a DSLR you can get -- carries:
(Sensor sizes are all to scale).
Basically P&S do just fine in bright sunlight; but if you bring them indoors or put them in very difficult low light situations, they just horrifically fail.
I shoot APS-H in a 1 D You are SPOT on ..
To clareify what is going on here ..
A Pixel is a photo site . Kinda like a Photo diode .
Its Size is how much current it can put out .(CCD VS CMOS is not relivent at this point ) ,
Full frame cams have the advantage that for a Givin MP rating they have HUGE Pixels .
This is why my Older 1D mk2 8 MP cam can still Blow the top off most 10MP cams out there.
for more dense Pixels you Need to AMP them more to drive the Image proc Chip ( like a DIGIC 4 Ect )
the Noise you see is partly Jonson ( shot ) noise and some is thermal noise )
the same "noise" you hear on a mIc on large PA .
its the same noise is with Old TV amps .
Thus If you don't Need High MP go low MP and BIG chips .
this is on the 1 D My link
at HIGH ISO ..( no flash in the theatre )
This is the S5 IS Point and shoot cam same MP My link
Lower ISO .. out doors
so as you can see the ISO VS Chip size issue is a big factor ...