I got the same problem after suspend. Restarting networkmanager helps.
Hovering with mouse-arrow over the nwm-icon shows:Benutzerlegitimierung
für mobile Breitbandverbindung wird benötigt (user authentification
needed).
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9.10 - Samsung NC10 - HSPA modem - cannot connect to EDGE/UMTS network
*** This bug is a duplicate of bug 399334 ***
https://bugs.launchpad.net/bugs/399334
** This bug has been marked a duplicate of bug 399334
proftpd 1.3.1-12 +FileZilla = v3.1.0 can no longer connect to ProFTPd via
TLS/SSL (Bugzilla – Bug 3094)
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Perform unidirectional SSL/TLS shutdown
*** This bug is a duplicate of bug 399334 ***
https://bugs.launchpad.net/bugs/399334
** This bug has been marked a duplicate of bug 399334
proftpd 1.3.1-12 +FileZilla = v3.1.0 can no longer connect to ProFTPd via
TLS/SSL (Bugzilla – Bug 3094)
--
Perform unidirectional SSL/TLS shutdown