Photoshop :: Mini Bridge Using Copy And Paste?

I currently have CS5 extended installed on a desktop (xp 32 bit) and a laptop (Win7 64 bit) all files are up to date. When I start Photoshop create a new file, start mini bridge to select the file I want to copy and paste into my new file. I select the file,it opens in Photoshop I press these key strokes (control-A; control-C), move to the file to be copied to and press control-V. The file may or may not be copied. Even pressing control-V several times. You can press edit; paste and still nothing happens. But press edit; paste special; the file will be copied into the file.  If the file is copied on the first try go back and select a different file and repeat the process. To get the file pasted into the document I; created a new layer; control-V; file is copied to a layer.  If I create a new layer then turn off this layer press: control-V the file can also be copied to a layer.  All of the above is when I start mini bridge to navigate to the files. 
 
Now close Photoshop and Bridge.  Restart Photoshop start Big Bridge (not mini bridge)! Create a new file; use Big Bridge to navigate to the file you want to copy into the new document, files opens into Photoshop enter the keyboard short cut or tool bar to select the file, copy the file. Now switch to the file to be pasted into  press;control-V or select; file; paste; now everything's works.  Try this process with different files to be pasted into the new document and it works flawless every time.