Having this weird issue yesterday for the first time ever and solved it with /sbin/initctl restart xsession/icd2 (thanks! I was really desperate not understanding why ping is OK but 2G/3G/wifi internet connection doesn't work except mail...) But for probable future next occurrence of this issue i'm curious if there is any other way, because having this issue I can not connect to internet to google the right syntax. :-) Isn't it e.g. included in any of refreshes in Schturman's N9 QRefresh? Probably "Network refresh"? I haven't succeed searching for "Network refresh" description. And of course I'm not able to try it because I haven't this issue anymore after the fix.