Having no success. Help, please?

It started a month or so ago with Chrome telling me it had "encountered a problem and must close down". I wasn't overly concerned, because I had encountered that occasionally ever since I started using Chrome a year ago. Then two weeks ago, I started getting "Generic Host Process for Win32 Services has encountered a problem and must close down" after having the computer up for 1/2 hour or so. Then Chrome couldn't open any page, and Opera would only open to the home page.

So far I have run everything in the R & R Me First thread. Combofix ended up giving me the BSOD after running through all the tests and telling me it needed to reboot. After 2 more attempts to reboot, it come up fine.

I got through the other scans, but still no luck. I would appreciate any help that might be offered.

Here are the logs, I hope.

SUPERAntiSpyware Scan Log
http://www.superantispyware.com

Generated 11/04/2010 at 04:21 PM

Application Version : 4.44.1000

Core Rules Database Version : 5747
Trace Rules Database Version: 3559

Scan type : Complete Scan
Total Scan Time : 01:07:17

Memory items scanned : 587
Memory threats detected : 0
Registry items scanned : 8037
Registry threats detected : 0
File items scanned : 27989
File threats detected : 0
--------------------------------------
Malwarebytes' Anti-Malware 1.46
www.malwarebytes.org

Database version: 4943

Windows 5.1.2600 Service Pack 3
Internet Explorer 8.0.6001.18702

11/4/2010 5:49:53 PM
mbam-log-2010-11-04 (17-49-53).txt

Scan type: Full scan (C:\|)
Objects scanned: 222681
Time elapsed: 1 hour(s), 22 minute(s), 33 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)
-------------------------------------
ComboFix 10-11-03.04 - dad 11/04/2010 19:23:36.1.2 - x86
Microsoft Windows XP Home Edition 5.1.2600.3.1252.1.1033.18.1014.617 [GMT -5:00]
Running from: E:\ComboFix.exe
AV: AntiVir Desktop *On-access scanning disabled* (Outdated) {AD166499-45F9-482A-A743-FDD3350758C7}
.
---------------------------------------
==================================================
Scan Start Time: 2010/11/04 20:32
Program Version: Version 1.3.5.0
Windows Version: Windows XP SP3
==================================================

Hidden/Locked Files
-------------------
Path: C:\hiberfil.sys
Status: Locked to the Windows API!

Path: C:\WINDOWS\Prefetch\OPERA.EXE-3B75DA17.pf
Status: Visible to the Windows API, but not on disk.

Path: C:\Documents and Settings\NetworkService\Cookies\system@scorecardresearch[3].txt
Status: Invisible to the Windows API!

Path: C:\Documents and Settings\NetworkService\Cookies\system@egotvonline[2].txt
Status: Invisible to the Windows API!

Path: C:\Documents and Settings\NetworkService\Cookies\system@bluekai[2].txt
Status: Visible to the Windows API, but not on disk.

Path: C:\Documents and Settings\NetworkService\Cookies\system@egotvonline[1].txt
Status: Visible to the Windows API, but not on disk.

Path: C:\Documents and Settings\NetworkService\Cookies\system@scorecardresearch[4].txt
Status: Visible to the Windows API, but not on disk.

Path: C:\Documents and Settings\NetworkService\Local Settings\Temporary Internet Files\Content.IE5\967DXZ8F\cookies[1].js
Status: Visible to the Windows API, but not on disk.

Path: C:\Documents and Settings\NetworkService\Local Settings\Temporary Internet Files\Content.IE5\EATWEEDD\int[1].js
Status: Visible to the Windows API, but not on disk.

Path: C:\Documents and Settings\NetworkService\Local Settings\Temporary Internet Files\Content.IE5\FK7HGC5D\top_youtube_logo[1].jpg
Status: Visible to the Windows API, but not on disk.

Path: c:\documents and settings\networkservice\local settings\temporary internet files\content.ie5\trmc4gpb\jquery[1].js
Status: Size mismatch (API: 48273, Raw: 24679)

Path: C:\Documents and Settings\NetworkService\Local Settings\Temporary Internet Files\Content.IE5\TRMC4GPB\600chocolateplans_com[1].htm
Status: Visible to the Windows API, but not on disk.