Hey I just got a palm treo 700wx and it's in like new shape. I work on computers so I played with it. It came loaded with windows mobile 5.0 but I upgraded it to windows mobile 6.1. It ran fine before I did that but now it's slow and seem to run out of memory too. If I can speed it up I'll keep it the way it is. But if it can't be done then can I revert back to the 5.0 or even try the 6.0 instead? I've worked on blackberries and they were able to be reformated that way and I was hoping this would be the same. Thanks in advance. Oh and I've been searching for two days and I haven't found any thing that can help me.