I had a problem with my Nokia N95 over the past couple of days. For some reason, I couldn’t open any text messages that I received.
Doing a search of the Nokia Forums, it seems like it’s a familiar problem, but with no specific fix. I did try the factory reset as suggested, but it didn’t fix anything.
I went into the O2 shop at the top of Grafton Street and since the phone was still under warranty, they swapped it and I was sorted within 10 minutes. Excellent customer service in there, and no problems whatsoever.