Scatterby made a thread about quoting problems in Internet Explorer and also about an update to a more modern browser message appearing when on this forum. There's also been display problems for some IE users where users avatars are appearing over the posting rather than to the left as normal.
Jonmark on the Social Strata help forum has come up with an answer to all of these. Check to see if the compatability mode has been set on for this forum (Tools - Compatability View Settings). If Gagajoyjoy is shown there, click on it and remove it. Then restart IE and see if that helps. I use IE8 when I'm not using Firefox, and this has worked for me.