No Image in My Profile

Many months ago I put a query on here about the fact I couldn't upload an image to My Profile.  I've clearfed the cache, emptied the history, deleted the cookies etc., but I still can't upload anything.

Just wondering if any newbies have any ideas?  I have no problem adding images to the articles.

Does it give any errors? Or perhaps you're not uploading a supported file type?

No, no error messages come up and I am trying to upload a supported type of image.  In fact it is the image I originally had on my site but I took it off as I wanted a change.  When I tried to change it then it refused to work with me and it won't even permit the uploading of the original image.

I'm at the end of my tether trying to think what to do and will try anything suggested.