Computer will not power down.

I have a computer that will not shutdown. Windows XP acts like it will shutdown, the screen turns blue, the mouse and keybaord shutoff, but the mouse pointer is still on the screen and it locks. The mouse is optical; so I can see it shutoff. The other identical computers shutoff at the same time the mouse turns off.

Any ideas what could cause the computer to hang?

cookies, spyware, and adware can cause this problem I have had it before. I cleaned the systme using a program and it worked fine afterwards. It can also be your network connection if you are connected to the internet. I use an HPNA adapter and it sometimes causes it to hang up upon shutdown. I have yet to find a fix for this.

I would say that there is a low possibility for spyware. This was a new install. I even have Deep Freeze and Norton Installed on it. It has only been online a few times. I'm not saying that isn't the problem though. I will look into it.

... This was a new install...

Was it a custom build?

No. It is a gateway profile 6. We ordered over 40. This is the only problamatic one.

sounds like maybe defective security software. I would uninstall reinstall all security software and any additional programs if you have not already.