I was having problems with last year's version of NAV doing this slowdown business and also needing to be manually terminated when trying to shutdown. That went away after installing this year's version but all of a sudden it's baaaaaaaack. And in a really bad way.
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 3 (2600.xpsp_sp3_gdr.130307-0422)
Language: English (Regional Setting: English)
System Manufacturer: Dell Inc.
System Model: Dimension XPSGEN5
BIOS: Phoenix ROM BIOS PLUS Version 1.10 A02
Processor: Intel(R) Pentium(R) D CPU 3.20GHz (2 CPUs)
Memory: 2046MB RAM
Page File: 460MB used, 3476MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
DxDiag Version: 5.03.2600.5512 32bit Unicode
Card name: RADEON X850 XT Platinum Edition
Manufacturer: ATI Technologies Inc.
Chip type: RADEON X850 XT Platinum Edition (0x5D4D)
Think that's the critical info. The product is Norton AV 13. Now for what's going on:
Since Norton updated yesterday I'm having episodes while using the browser where the slowdown either freezes the system completely or it slows down so bad I lose the mouse and it executes one command every 5 min or so making normal restart almost impossible.
I was using IE8 when after a few minutes I had such bad slowdown I was unable to load web pages and finally had to use the power button to shut down. I immediately ran a full system scan using AV. When that failed to turn up anything I ran the Power eraser which found and "fixed" 3 temp files that it categorized as risky. No other info was given. After using the clean up tools I again attempted to use IE8 but again encountered the same problem after a few minutes.
At this point I thought maybe I was losing one of the hard drives or graphics card but was able to actually load and play my large Sims 2 game files. Freecell was a breeze. And my modem is fine because I was also able to download a 24 GIG World of Warcraft patch. But as soon as I'd go back to using IE8 browser problems would start again.
Ok so maybe the NAV fix corrupted the browser? I didn't see anyway to uninstall IE safely so I downloaded Firefox. Since NAV seemed to also be involved I uninstalled it, then reinstalled it. Last night I used Firefox to stream video from Hulu. All was OK at first but about 10 min into a show Norton AV gave me a warning that Java JQS was utilizing too much disc space. Ok so I went to Google and found out how to use Run/services.msc to disable Java JQS.
This morning I tried again. Firefox streaming video using Flash player from Hulu. 10 min in, the slowdown started again and it was so bad it took nearly a half hour to restart my PC. Web pages like this are fine. This post took around 20 min to assemble and so far no slowdown. If I had to guess I'd say the problem is a Flash/NAV issue. When I uninstall NAV the problems go away. If I don't use any pages with heavy graphic or streaming content the problems go away. If I don't use the browser everything's OK.
Since not using Flash isn't an option for sites like Hulu where it's used exclusively for streaming, this is going to need a fix on Symantec's end. I don't know what I'm going to do. I'm not sure Silent Mode is going to let me stream and even if it does I cant leave it on forever. I'm seriously worried.
I'm obviously not a techie like many of the posters here so don't think I have a prayer of finding a workaround. (says prayer to Symantec developer gods anyway to please end the pain)
PS. I forgot to add my connection is DSL with about 7 mbips? (sorry whatever they call that unit of download measure)
And just as the slowdown began earlier today NAV gave a warning that Firefox had high use of disc space. Since slowdown symptoms happened across BOTH IE8 AND Firefox I doubt they're the culprits. My Computer shows about 290 GIG of free disc space.