Pelikal,
I would surmise that you took the image details from photobucket as an [IMG]somephoto.jpg[/IMG] string, and put it into your post as a link:
[ URL]http://somephoto.jpg[IMG]somephoto.jpg[/IMG][/URL ], as that is how it ended up. Note that I had to insert spaces at the start and end of that string to show what's going on.
The net effect of which is to embed the URL, but with the desired image as the placeholder text for the URL. Hence, clicking on the picture is actually clicking on the link to your public photobucket.
Just pasting [IMG]somephoto.jpg[/IMG] simply embeds the image, not the link.
In the standard PPRune editor, the Insert Image icon is the yellow one with a mountain in, and the Link icon is the one with the globe and a... link. The former puts the IMG wrapper around selected text, the latter puts the URL wrapper around selected text.
SD