MIME-format in MACINTOSH

Could you give an example? MIME-format is a lot of things, but on my iBook, I have never encountered a problem reading MIME-stuff. What system(Mac OS 8, 9 or whatever) are you using, and what version of Explorer is it?

Du spørger hvad jeg har af system, Jeg bruger system OS 9.1 og Explorer 5.0, og det er når jeg kommer ind på hjemmesider med en eller anden form for script eller i formularer, så bliver billedet frosset, og der står at min maskine ikke er konfigureret til MIME, - jeg skal så genstarte for at komme videre

Sorry I did not see that it was in english at first.
I use OS 9.1, and Explorer 5. and sometimes when I am on a homepage with a form or a special script, my screen freezes, and I have to restart to continue.
It is allways, when it says at the bottom, that my mac is not configured to read MIME.

Det lyder mærkværdigt. Kan du give et eksempel på en side hvorpå det sker?