I bought my wife a Nokia N91 for her birthday last year and initially she loved it. It has got a 4gb hard disk which makes it idea for rich media.

She even used it to listen to a couple of podcasts (no, none of mine, she’s not that sad!).

However, it has now become a major source of annoyance for her as it freezes up completely at least once a day. The only way to get it going again seems to be to take off the back, remove the battery and re-seat it again!

Has anyone else had this kind of problem with an N91 and if so, how did you resolve it?