I got a Treo 755P awhile ago to replace my Centro. I just have one problem with my 755P. When ever I type, whether it be a text message or something in memos, my keyguard will randomly come on. It also randomly comes on when I use the 5 way navigator, like for playing a game or adjusting brightness. This is very very annoying because when I'm typing I have to keep unlocking my phone. Now, I have gone into settings and completely disabled the keyguard and it doesn't lock when I put my phone into sleep but it still locks when I type and I also did a hard reset. There doesn't seem to be a pattern to when it comes on, it's just random. Has this happened to anyone else? How can I stop it?

Thanks,
Austin