I have a Pentex K110D

I have a Pentex K110D SLR Digital Camera. It's been great. But recently I've had some problems..the camera takes longer to process the data after taking a picture. The amber light stays on for up to a minute. Sometimes when I take multible pictures in quick succession not all the pictures can be read by my computer eventhough I can see the same picture on the camera's playback screen. When I delete the picture using the camera a pictor error message flashes. Three times recently when my computer can read the image there have been red and blue outlined rectangular picsals with no image within them but the rest of the image area does have an image. Lastly (all this has just started happening in the past two weeks) only part of the picture can be read on the computer and the rest is blanked out in a nuteral mauvish field.
No of this is covered in the camera's trouble shooting section.
Can you please tell me what's happening and how I can correct the problem/s?

Alfred Muma
awmuma@shaw.ca