On the bottom line of my Linux mint 13 (mate desktop) my internet icon for wlan shows very good connection to my wlan as usual.
But acctually I do not have access to the internet. E.g. Firefox, Thunderbird do not work and also the dropbox item (also in the bottom line/status bar) doesn't show that green circle-point on startup (as a sign of synchronising), so this is not a problem of a certain application within my system.
I think the problem appeared after doing a usual update via the update manager but I'm not 100% sure about that. Besides updates for steam and Firefox i was suggested to intsall mintupload and mintdesktop (priority 1) so maybe this has something to do with my problem. Deleting those installements via apt-manager didn't solve anything.
So right now I really don t know what to do. My wlan definitly works well as I'm posting this with my friends laptop within the same wlan.
I hope someone can help, many thanks!
Edit: The problem arises also with my wired ethernet connection. The status bar shows a symbol that I am connected, but actually I am offline...