I shot a bunch of bird pictures this morning (about 2GB worth of RAW files). I had 40GB worth of space on my computer hard drive. I hook my camera up to the computer using the USB cable and it gave me an error that I was out of hard drive space. I check and sure enough, I had run out of space. I deleted my files and check again to find I had 40GB of space left again! That didn't seem right at all, so I delete a few other files and was able to upload all the RAW files this time and it says I only have 3GB of free space left on my computer. What should have only been 2GB of data was somehow showing up on the computer as nearly 40GB. I deleted the files and did it again with the same results. I was afraid the files might be corrupted, or something. Eventually, I decided to just take the memory card out of the camera and use the reader on my computer. Well, it worked then and it only took up the 2GB of space that it should have.

Has anyone else had a problem similar to this? Does anyone know what causes it, or how to prevent it in the future? I'm using a Canon T3 with a Transcend 32 GB card. I'm also using Windows 7. I'm not sure if it was a problem with the camera, card, or computer. I uploaded some other photos later on today using the USB and it worked just fine that time.