Lost all pictures taken today. all pictuers taken

Try NOT connecting your camera to your computer.
The best way to download pictures from your camera to your computer involves removing the memory card from the camera and plugging it into a card reader (either built-in to the computer or connected via USB or FireWire). This is likely to be faster than connecting the camera to the computer, and won't run down your camera's batteries.
Once the card is plugged in, it will appear to your computer as a removable drive. You can use the operating system's drag&drop facility to copy pictures from the card to the computer's hard drive, the same way you copy any other files. Or you can use any photo cataloging program such as Picasa ( http://picasa.google.com ).

Hiit is simple dust particles. I can let you know by very simple tip. But unfortunately I can not describe in word everything. First thing you can try is that you can you ear know remover or squeeze blower. Set the camera at ccd cleaning mode.(not auto mode) See front inside of mirror box when mirror goes up, you can recognize the brown spot. Blow with the blower. Other method is I can not expain everything.

You might have your ISO set too high.

i also get horizontal lines on pictures taken...it was never like this before until only when i use this today...i have not been using this for 3 w weeks now and i never dropped it either....

Without actually looking at your pictures, I suspect you should have played around with the exposure compensation setting.

Format completely erases the card. Only do that after you've safely downloaded the pictures to your computer.

I Have The Same Exact Camera As You And Have lost of Experience With Digital Cameras I'm Guessing you just need digital camera compatible batteries (Rechargeable) Oh and keep in mind taking a picture requires a lot of energy use

I have the same problem, and upon looking into my problem, i recall reading that Sony had used crappy glue in which they attached the CCD to the inner guts of the camera, and when that deteriorates, which doesn't take very long, then your pictures will have lines through them.

I think i remember reading that Sony said they will replace all cameras within 2 years of their manufacture. Call Sony's troubleshooting and support and they may replace it for you.

Hope i helped solve your problem.

- Josh

remove the card and see if you still have the same problem... if so then repair. if not then it is the card

i just got mine today, and the batteries were dead withtin a couple of hours, so yes. mines has decided to go black, it was fun while it lasted,, theres £90 ill never see again