>>> "Lars" == Lars Ingebrigtsen <larsi@gnus.org> writes:

   > Uwe Brauer <oub@mat.ucm.es> writes:
   >> Ok I changed the variable to
   >> Its value is ‘gnus-block-private-groups’
   >> 
   >> Still the math png are displayed. My setting is

   > Are you sure the math pngs are external and not embedded in a
   > multipart/related message?

They are embedded (here is an example), the question is with changing
the setting to gnus-block-private-groups, am I safe?

$\int f dx =0$