734603 - CPU Usage 100% with Firefox 10.0.2 & Quick Heal antivirus.

Status: RESOLVED INVALID

(Firefox :: Untriaged, defect)

Description

[Sougandh]

Attachment: Images through (1.JPG through 5.JPG) which shows what is actually happening.

User Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.0; Trident/5.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.30729; InfoPath.2; .NET CLR 3.0.30729; .NET4.0E; .NET4.0C; BRI/2)

Steps to reproduce:

I have licenced copy of Quick Heal antivirus installed on my laptop.  I have performed all scans everything needed and there is absolutely no virus reported on my laptop.  Post installation I execute FF  10.0.2 for browsing.  I have collected the screen shots of what actually happens  & I have attached the images in the attachment.  Please go through them in the actual order (1.JPG through 5.JPG).  Please check the attachments in the given order within the zip folder (Quickheal problem.zip)


Actual results:

What I find is that when I start FF 10.0.2, I immediately see a spike in CPU usage & it goes up to almost 100% & remains like that with minor dips. The moment I stop the Firefox process, from the processess panel on [Windows Task Manager], there is immediate marked difference  in the CPU Usage & it is seen within the normal range of normal [2% - 10%].  Whenever FF 10.0.2 is running, I am not able to do anything on my PC and it slows down my PC. 

I tried cleaning the %temp% folder & also tried re-installing FF 10.0.2. But nothing happened & the same thing persists. 

The details which I have noted in the screen shots are as follows.  Please check the attachments in the given order within the zip folder (Quickheal problem.zip)

1.JPG - Without FF 10.0.2 running.

2.JPG - FF 10.0.2 started and the CPU usage has shown a marked increase.

3.JPG - FF 10.0.2 running and the usage is well beyond 90%.

4.JPG - Inbetween I again stopped FF 10.0.2 and what I see is a fall and again I have started it and what I get to see is again a spike.

5.JPG - Finally again I have closed the FF 10.0.2 and what you see is CPU Usage is down to almost nothing



Expected results:

There should no such surge in CPU usage and it should be in the normal range [2% - 10%] or anything below 40% maximum.  And the user should not be facing problems of slowing down etc.,

Comment 1

[Thomas Ahlblom]

The alleged bug does not block further development of Firefox.

Comment 2

[Matthias Versen [:Matti]]

The CPU is used by the Quick Heal antivirus process.
Please contact the support of that product and ask why it consumes all the CPU.

It would be only a Firefox bug if Firefox would consume the CPU.

Comment 3

[Sougandh]

Thanks for the update.  I had to uninstall FF, delete the entire folder and then tried re-installing.  Now it looks fine.  Thanks anyways.