Hudson - if the times are fine in Manual mode, then I would guess that there is some kind of electronic problem. Not sure if cleaning the shutter speed dial contacts will help this.
I bought a CLE from an RFF'er a couple of years ago with this exact problem. I used it for a while exclusively in Manual mode with a 21mm Super Angulon (which will not meter properly with the CLE in any case due to the deep-protruding rear lens elements), but after a few months the same RFF member posted an ad saying he regretted selling his CLE, etc. He actually bought the camera back from me!
So, probably not what you were hoping to hear...
