Why all the letters in my IE became lower-cased?

[Cipher]

While viewing any page by IE6, all letters became lower-cased. After refresh
screen(F5),they will return normal. But when I open the next page, all
letters become lowcase again...

Can you help me?

 

[Matt S.M. Perry [MSFT]]

Letters in the web page or letters in the browser (e.g. menus)?
Try a repair or uninstall of IE6:
http://support.microsoft.com/default.aspx?scid=kb;en-us;293907 and then
re-install from Windows Update + all security updates. Also make sure your
virus checker has the latest signatures.