Pictures are overexposed when taken in sunlight, but not all the time???

Check the information on exposure in the manual

The shutter flex cable inside the lens is broken. Happens to all cameras from Canon A4xx series. At day the images will be overexposed with horizontal lines on it, but it could look better at dark / night. The FLEX has to be replaced. Canon doesn't supply new flex cables for these, but there are some cheap copies on ebay. But as these brake very often, I wouldn't suggest you investing money in this camera, because it will brake again sooner or later.

You could set the white balance to the full sun setting. You could set the ISO to a lower number. You could set the "exposure compensation" to a lower number.

CCD FAILURE ! Call SOny they will do it FREE it is a known manufac fault let me know if i can help more see sample advisory sony knows about it !! Pls RATE ME WELL ! Regards zohail http://esupport.sony.com/US/perl/news-item.pl?mdl=DSCT1&news_id=161

Many cameras have an exposure adjustment of increasing/decreasing amount of exposure (usually marked as -/+) Yours is probable set with to much overexposure. This is a setting you can change.

It's probably a faulty shutter. Take a look at my blog post to a possible solution.

i have the same exact problem with mine. it's two and a half years old as well. i also noticed that if you try taking pictures in any of the best shot modes the pictures come out looking like paintings.

also, did you ever try cleaning the lens?

I also have the same problem and I took it to the canon service center. They told me that I have to replace the whole lens kit the problem was with the shutter not closing properly thus overexposing the pictures

try it in auto mode if it is the same condition do u feel change in color like white turning pink or purple or sort of over exposed pics as u said then i worry that ur CCD HR is going to faulty in coming days later on pics will get pink and purple and then ccd stops working completely , i hope this is not the case do let me know if i can help u

This is a defective CCD problem known to Sony. They'll pay for shipping and repair it free of charge. Go here for details: http://www.imaging-resource.com/badccds.html