My HTC Tattoo has been lagging a lot recently, particularly in the messages area. I suspected that having over 5000 messages stored may have been the problem, and sure enough deleting some did help the lag slightly. However, when i go to delete the texts from my girlfriend (almost 4000) the whole messages function stops working. Its now been a good 3 hours, and still the phone is not opening my messages. Another previous symptom has been that when i click to open a message, it takes me to the wrong conversation. Any ideas?