Were you using USB host mode at the time of these incidents? The problem sounds very similar to the one reported to Bugzilla in https://bugs.maemo.org/show_bug.cgi?id=3281 . The Bugzilla resolution was WONTFIX , on the grounds that host mode is not officially supported by Nokia. However, if the same bug affects usage without USB host, there might be a chance of some action. You mention something about using the browser. What other work was the N810 doing?