I'll try to describe this as best as I can.
I added a custom profile field some time ago to allow users to add a link for a picture of their computer. Now in the custom profile field I added an example URL link in the text area of an image hosting site URL to use. Well, that image hosting website went defunct so I went into the custom profile filed options and got rid of that example link. Even though I did that users who registered prior to this change still had that link example in their profile field. So thinking it was a cache thing I cleared the cache. Still no change. So I had to go into these two user's profiles via the ACP and delete the example link in the custom profile text box under their profile.
I think this may be a bug and if it exists in 3.3.x it may need to be fixed.