SLED11: icon cannot be displayed like it does on SLED10

Help !

I put my own icon file into /usr/share/icons/hicolor/48x48/mimetypes/text-x-extension-eml.png and run cmd gtk-upgrade-icon-cache. The eml files on Desktop will display as I want on SLED10+SP2/SP3. But failed on SLED11, it just looks like a plain text file !

Is it OS limitation or what I am doing wrong on SLED11 ? Thanks a million for your generous help !!!

~ nick

Help to know what desktop. KDE/Gnome??

Hi gogalthorp ,Thanks for your response ! the desktop is gnome, I think.