My son and I recently purchased a new Dell Dimension E310 computer. We have AVG AntiVirus and use Zone Alarm Firewall. Also, we periodically scan the computer for spyware using Ad-Aware and SpyBot. Unfortunately, some malicious stuff seems to have gotten through the defenses. What we are seeing, occassionally, is that the system slows down to a crawl, and the only way to fix it is to to reboot. While the system is preparing to shut down, we have to end some programs with names that are always a jumble of alpha-numeric characters, and are never the same name. I just ran HijackThis and am attaching a .txt version of the log. I would appreciate any expert help that the members of this forum could provide to tell me what items to remove. Thanks in advance for the help.