So you can't view the pictures on the phone anymore and you can't view them on a computer? Or you just cant open them on a computer?

Where are the files located? /sdcard/dcim ??

 

If you have a file manager/file browser on your phone and you take a look at the file....what is the date modified?

Was the file last modified when you took the picture or when you sent them? Did you send them within the first 20 min? What application did you use to browse the pictures?

Basically, if the file wasn't modified since you took the picture, then the SDCard might have gotten corrupt, but if the date modified was minutes after you took the picture, then some app on the phone has corrupted your picture. Maybe an app that sends pictures online or a picture viewing app.

Do you have apps that run off the SDCard?

One thing you could do if the pictures are important, is there are programs for Windows that will let you recover pictures from SDCards....even if they were modified or deleted. But if you have apps running on the SDCard, it will be tough to recover that data....might have been overwritten. And if that is the case you would want to immediately remove the SDCard and never let any new data write onto the Card