All your minidumps repost Analysis_Inconclusive. However all your crashes are errored as 0x8E which is often a driver conflict. See this link to read more on it.
http://msdn2.microsoft.com/en-gb/library/ms794023.aspx
A. 3 of your minidumps mention IEXPLOER.EXE which is the main executible for Microsoft internet explorer. Without this you don't connect or surf the web.
B. 2 of your minidumps mention HelpSvc.exe which is an executible of the Windows OS and it has to do with security in the sense of pop-ups, plus other items.
C. One minidump listed ccApp.exe which belongs to Norton anti-virus; is responsible for autoprotect.
D. Another minidump lists Acrobate.exe which is a process belonging to Adobe Acrobat writer.
Somewhere in the mix you have a serious driver conflict and my suspicion is Adobe and here is why. Adobe's latest offering is causing quite a bit of conflicts for many people. It has become bloated. Their latest offering of their Micromedia Flash is causing internet crashes. Microsoft reports this as so and Adobe is aware but they have yet to rectify the problem. I have been a victim of this myself.
I was also having the continuous conflict with Adobe Reader because its Autoupdate.exe would NOT shut down anytime I wanted to read or download a PDF file. It was loading my cpu at 99%! End Task would not work. So I uninstalled and went with Foxit and I haven't had any issues with opening and downloading PDF files.
Here are my suggestions, others may tell you differently:
1. Simplest thing to do is uninstall any and all things Adobe and see if that rectifies the issue.
2. You might want to consider another anti-virus solution. Norton is notorious for being bloated and hogging resources. To be fair, their latest offerings are much better at system resource demands.
3. Run your anit-spyware/anti-malware programs, your anti-virus programs just to make sure you are not infected. In addition run Kaspersky's, Trend-Micro's, and BitDefender's free online scans.
4. If you don't have it, download and install CCleaner. This is a GREAT free tool and is completely safe.
5. Defrag if you haven't in awhile.
6. Lastly, run memtest to test your RAM.
* In addition you main need to run check disk and you may be required to put your OS disk in your drive and do a repair. But see if the above helps first.