I'm having the same issue running Ubuntu 7.04 on a HP dc5700, using just the onboard video. It only seems to happen when gone overnight, the screensaver will come back and give me the login prompt if i've been gone for just a few minutes, or an hour or two. It's very frustrating, as I'm currently trying to build the case for myself, that everything I want to use will work on Linux, justifying my getting rid of Windows. Here are the files you wanted to look at from the others...
I'm having the same issue running Ubuntu 7.04 on a HP dc5700, using just the onboard video. It only seems to happen when gone overnight, the screensaver will come back and give me the login prompt if i've been gone for just a few minutes, or an hour or two. It's very frustrating, as I'm currently trying to build the case for myself, that everything I want to use will work on Linux, justifying my getting rid of Windows. Here are the files you wanted to look at from the others...