How do I get rid of this picture?

[margaretsmall]

This picture (Boofers frozen culture I think) which I seem to have picked up when I was searching Sailors mother culture thread, has now permanently attached itself to me. It turns up whenever I try to post. Could you please tell me how to get rid of it? Thanks.
Margaret

[linuxboy]

What are you talking about? where does it show up?

[margaretsmall]

Thank goodness, its obviously only showing up on my screen, but very disconcerting!  So stand easy everyone. And now it's not happening, so just one of those mysterious computer glitches.
Margaret