My blog is showing weird French chars (Â)

Recently I noticed that my blog has started showing weird French  characters in some of the posts e.g. http://greyaliengames.com/blog/my-first-blog-post/

I found a web page about it: http://weblogs.java.net/blog/kohsuke/archive/2008/01/a_and_nbsp_myst.html

and another: http://ask.metafilter.com/71246/What-the-%C3%82

Which seems to explain it, but the thing is my Wordpress is set to use UTF-8. The page source even has a meta tag setting the content-type to UTF-8 at the top (and I don't think it's broken...), so I'm confused as to why it's gone wrong. The problem is in Firefox 3 and IE6.

Any ideas? Thx a million if you do have any! :-)

Tried changing from UTF-8 to ISO-8859-1?

Has your site moved to a new server? We had the same problem when our isp moved our mysql database. Mysql uses for default latin text. The result was that all the articles had those funny characters since the text in those articles was unicode.
In the end we had to run some sql scripts directly on the database to fix stuff.

Probably I shouldn't do that as the new standard is UTF-8 for Wordpress and if I change I wonder it it will break my new posts...

Possibly, it's the sort of thing the do and don't inform their customers. Is there a way to change the MySQL default?

My uncle Artichoke just screamed 'Mushy Peas!' at the top of his voice. Hope this helps.

Just tried out "UTF-8 Database Converter" but it screwed up my posts, of course I backed up and restored so that's OK. Now I'm manually editing by searching for  ARG.

Seems to be a common bug in Wordpress caused by some plugins.
http://www.feedage.com/feeds/1959655/semiologic-forum--rss-feed-no-longer-works

..And you're moving to Canada? maybe it's going to morph into Canadian French.. :-)

Solved.

@markcw: I didn't like that solution as it removed the new wordpress default encoding, so I manually edited the posts like I said above to bring them into line with UTF-8 for future compatibility.