I switched to NOD32 last week after the latest NAV fiasco. So far I'm very pleased. I found one virus NAV missed because of the update problem so now I will never feel the need look back. I need some help with errors in my scanner logs. I'm running Windows XP sp1 with all the updates. Here is the log: Scan performed at: 1/18/2004 8:36:55 AM Scanning Log NOD32 version 1.600 (20040116) NT Operating memory - is OK MBR sector of the 2. physical disk - error reading disk sector MBR sector of the 3. physical disk - error reading disk sector date: 18.1.2004 time: 08:37:21 Scanned disks, directories and files: C:; D: C:\pagefile.sys - error opening (access denied)  number of files scanned: 18950 number of viruses found: 0 time of termination: 08:41:05 total scanning time: 224 sec (00:03:44) Notes:  File cannot be open. It is being exclusively used by another application or operating system. My system seems to be running fine, scan disk and defrag show no errors. The only thing I can think of that might be linked is I used Partition Magic early last Fall to copy my system over to a new hard drive. The process wasn't flawless but in the end all I had to do was reinstall programs and everything seemed to be fine other than this error. Should I be concerned? Or as long as all seems well leave it alone? Also maybe I should add I use Outpost Pro ver 2 as my firewall.