My wife's refurbed Dell Latitude CPi DX300T has an extremely annoying habit of freezing for 20 or 30 seconds every now and then, including frequently. Everything stops except for the mouse pointer.
The keyboard, the keypad buttons, mouse buttons if a mouse is attached, application processing come to a screeching halt. The screen does not refresh. A few of the last keypad button clicks made before it comes back alive are stored in the buffer, but not all the clicks made during the freeze. But the mouse does move when nothing else does.
It's running Windows 98 SE. The only application is MS Office 2000. THe only peripheral is a PC Card Xircom network adapter/modem combo device. The network adapter works fine.
The Device Manager indicates that there is a problem with Other devices/PCI Serial Controller. I've removed this item, but it comes back on reboot. This item does not appear on other machines that I've got.
I've reformatted and reinstalled the operating system and the application from scratch - no good.
The laptop has gone to the shop for this problem, but the tech there couldn't find anything - no virus or anything like that.