The camera shooting mode/drive mode has been changed to Continues advance which takes four pictures when the shutter is pressed and held. Or it could be on Multi Frame mode where it takes 9 pictures when the shutter is button is pressed once.
Here is a PDF manual that will help.
http://www.google.ca/webhp?hl=en#hl=en&source=hp&biw=1350&bih=823&q=Konica+Minolta+DiMAGE+X60+PDF+manual&aq=f&aqi=&aql=&oq=&gs_rfai=&fp=6a0673dc5c3f3912
You will need to copy and past this in your browser window.
The link is good I'm using right now to determine the problem.
The following are two screen shots of page 45 of the manual describing what needs to be done to bring the camera back to single frame use.
Diagram
Text for auto rest
And page 37 of the manual
This will bring your camera back to single picture with the click of the shutter
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