this is my first time on this message board, so if i am repeating another topic, so sorry, i'm just desperate to know what i am doing wrong with my digicam baby.
i bought this Pentax Optio S4i in May 2004. Its 4 mp, with 3x optical zoom...and other specs i cant think of right away!
when i bought it and began using it i was able to use it without any problems.the pictures were coming out good, the flash was going off(or not)when i wanted,etc.
now, (even) with the battery completely charged and the pictures are taken in adequate lighting and i (seem at least) to be depressing the button all the way down, this is what happens:
start the night with taking about 7 pictures somewhat without close time proximity, then i either turn it off, or i review the pictures, then i might change it to video and shoot some time, then i turn it back and take about 7 more pictures. i switch it off and it stays off for some time, i turn it on and try to take more stills but the flash doesnt go off. i check the battery(still full), there is enough memory (256 mb card and lotsa space), its not wet(with any spilled liquids),it hasnt been dropped/sat on, the flash setting is auto/manual/red eye reduction, still the same result: no flash discharge, the picture is dark and the moment(s) is lost. barely when the night has started does my camera refuse to cooperate.
i am stumped as to what i am doing wrong. i even sent it in for repair by the manufacturer and after a (torturous) 6 weeks i got it back but still its doing it.
please help me

or at least direct me to what i am doing wrong or badly or...what even!!
i would appreciate any help whatsoever :-/