What happened to my Umlauts?

Just a quick question that has probably been asked before: the board apparently displays any character that is outside the 7 character ASCII set, as a small rhombus with a question mark inside. At least, that’s what it looks like to me.
For example, in this thread: http://www.axisandallies.org/forums/index.php?topic=16779.30, in my post dated June 18, 2010, 03:19:33 pm, I quoted a bit of German text containing several Umlauts (an Umlaut is displayed as the pair of dots above an a, o or u in German). It looked alright when I posted it, but by now it looks strange with all the replaced characters.
I think I noticed this some time ago…… have there been any technical changes during the last few months that might be related to this?

Thanks, and no, I’m not German…… speak the language reasonably well though. I know about the workaround but I like them better the other way. And I want my c-cedille and e-accent grave as well!  :-)

I’d say it’s some sort of technical problem - maybe one of the forum admins can look into it.

On a side node, I thought Gargantua’s comment that was here but has now disappeared, was rather funny.

Yes, I think you accused me of being a weird commie European using all sorts of pervert gibberish, or something like that. And you know, I’m proud of that!  :-D

I don’t know. But in the mean time, my Umlauts are still missing!