I use Handcent for my SMS text app. I have about 6k texts on my phone now. Haven't deleted any since 2.1 came out and I needed to format. Sometimes my phone CRAWLS when receiving or sending a text. I mean it'll take 2-3 minutes just to send or receive a text. Handcent will hang for that long. When I power down the phone it usually improves responsiveness in Handcent but I'm wondering if I should delete the threads? Will I notice an improvement in text speed? I have no idea how much space a text message uses but I'm also wondering if I'm wasting internal memory space too. I don't have many picture messages. They are mostly just text messages. Any input would be appreciated. Thanks.