STYLETHREAD -- LET'S TALK SHOP!

my digital camera is being weird.  when i plug it into my computer, it only shows the pictures on the memory card up to a certain day.  so, i took pictures on valentine's day.  the next day, i plugged the camera in an looked at them.  then i took some pics for ebay (immediately after).  when i plugged it in to look at them, it only showed up to the vday pics.  they are on the memory card, b/c when you scroll through them on the camera they are there.  i've tried unplugging and replugging, looked throught the settings, but i can't figure it out.  any ideas? 

i'm just trying to avoid a torturous phone call with tech support if it's something common and simple.

btw, it's a panasonic lumix fz1