I have a client whose computer freezes several times per day, sometimes up to ten, and the Microsoft process, RNAAPP, is always involved. After the freeze, when opening the "Close Program" window accessed through CTRL-ALT-DEL, *always* RNAAPP is listed there as "not responding". Clicking on it and ending task always frees up the computer. I have been able to determine that RNAAPP is a major part of Dialup Networking. We have reformatted the hard drive (which is not compressed, does not use a disk overlay, and which I changed from FAT16 to FAT32), and upgraded the Windows 95 version from the original to Win95B (which involved a major Dialup Networking upgrade.) We have changed out the "no-name" modem and put in a US Robotics Sportster "real" modem. We have, just for the heck of it, changed the RAM on the motherboard. This client does reboot several times a day. She accesses the internet through her Dialup Networking Connection, and uses Netscape 4.x for her browser, and Eudora Lite 3.0.5 (whatever the latest version is) for her email. She was using older versions of both those programs until I upgraded them. She has two or three DOS programs she frequently uses, including WordPerfect 5.1, as well as a glump of perfectly ordinary Windows programs. Has anyone else experienced this? Are there any suggestions what to do other than my next step, which is to change out the motherboard? Roxanne Pierce R2 Systems, San Diego mailto:[log in to unmask]