I always wondered a simple thing with Gnus:

If I hit g, and no new news arrived, newsrc is not marked as modified.
In the other  hand, if I hit M-g,  even if no new news  arrived in the
selected group, it is.

Is there any reason?

-- 
|  Isn't vi that text editor with             Michaël `Micha' Cadilhac |
|   two modes... One that beeps and        cadilh_m - Epita 2007 - CSI |
|     one that corrupts your file?              JID: micha@amessage.be |
`--  -  -          -- Dan Jacobson                               - - --'