IE8 is not working

After installation of FF I hardly used to open IE8.Suddenly yesterday I watched that IE8 is not working properly.After clicking it opens and displays as usual.But that's it....suddenly it closes.......I am chuckled at this behaviour of IE8 as I am innocent and dont know what to do.....Please help me out......
REGARDS:
mistu4u

Did you do anything in particular? Installed any apps lately?
Also, what about the website? Some websites like Yahoo can crash the browser because of things like flash.

Have a look in the event viewer.

I installed Avast 4 and uninstalled it.Is it causing any problem?

Search for event viewer in the start menu.

Once in there, search for the time and date if the error and post back the details.

Avast is BAD! Indeed, that could be the cause of the problem. Try doing a system restore to before you installed Avast, and install MSE instead.

System restore: System Restore
MSE: http://www.microsoft.com/security_essentials/

BODY{font:x-small 'Verdana';margin-right:1.5em} .c{cursor:hand} .b{color:red;font-family:'Courier New';font-weight:bold;text-decoration:none} .e{margin-left:1em;text-indent:-1em;margin-right:1em} .k{margin-left:1em;text-indent:-1em;margin-right:1em} .t{color:#990000} .xt{color:#990099} .ns{color:red} .dt{color:green} .m{color:blue} .tx{font-weight:bold} .db{text-indent:0px;margin-left:1em;margin-top:0px;margin-bottom:0px;padding-left:.3em;border-left:1px solid #CCCCCC;font:small Courier} .di{font:small Courier} .d{color:blue} .pi{color:blue} .cb{text-indent:0px;margin-left:1em;margin-top:0px;margin-bottom:0px;padding-left:.3em;font:small Courier;color:#888888} .ci{font:small Courier;color:#888888} PRE{margin:0px;display:inline} - <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
<Provider Name="Microsoft-Windows-DNS-Client" Guid="{1C95126E-7EEA-49A9-A3FE-A378B03DDB4D}" />

<EventID>1012</EventID>

<Version>0</Version>

<Level>2</Level>

<Task>0</Task>

<Opcode>0</Opcode>

<Keywords>0x4000000000000000</Keywords>

<TimeCreated SystemTime="2010-07-09T07:28:24.168109500Z" />

<EventRecordID>163541</EventRecordID>

<Correlation />

<Execution ProcessID="1628" ThreadID="4256" />

<Channel>System</Channel>

<Computer>Subir-PC</Computer>

<Security UserID="S-1-5-20" />

</System>


- <EventData>
<Data Name="ErrorCode">3221225485</Data>

<Data Name="Location">0</Data>

<Data Name="Context">0</Data>

</EventData>


</Event>
This is what I got!!!!

Yes... Try doing asI said, with the system restore.

Click Start and begin tying: Internet Explorer in the search box. You should see Internet Explorer (no Add-ons) appear. Click on that, does it stay open? If so, you know one of your add-ons is causing the problem, which is the most common cause of IE8 problems.

Go to system restore point and restore to time when it is working.disable avast and try to open IE8 if it works.

go to system restore point and restore ur system to early point, or try this
Basic IE troubleshooting always begins with clearing your temp files, cookies, and browsing history. To access your internet options go to your control panel and double click the icon labeled "Internet" options. Click the appropriate buttons to clear those items and try to load the program again.

If you are using IE 7/8 you can try to run the program without loading any add-ons to see if one of them is causing the problems. To do this, click Start -> All Programs -> Accessories -> System Tools and then click Internet Explorer (No Add-ons).

(You can also load IE without add-ons by clicking START --> RUN and then typing iexplore.exe -extoff)

If those don't work try to re-register IEPROXY.DLL by clicking START --> RUN and typing regsvr32 IEPROXY.DLL and then clicking OK.

When IE dissapears does IExlorer.exe show in the task manager's list of running processes?

Have any toolbars or new sofware been added recently? If so and you are using Win XP you may want to try a system restore to a previous point before the changes were made or uninstall the toolbars completely. Also disabled all Pop-Up blockers to see if that has any effect.