I purchased a new HP-p3661pb with windows-7-64bit operating system.I immediately began to experience crash dumps related to the Norton Symantec dispatch driver symtdiv.sys. The crashes occur on the average of every 20 days. I have updated to latest version of the Norton Security Suite, which is version 4.3.0.5, but the crashes continued. I have removed Norton and replaced it with Kaspersky Security Suite and have had no problems in the past 26 days. Has anyone else out there been experiencing this trouble? My system has an Athlon 630 quad core, 8Gig RAM and Win-7 Home Premium.

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