User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20100101 Firefox/15.0.1 Build ID: 20120905151427 Steps to reproduce: I installed F-Secure Internet Security 2013 (a bundle version from the isp). Used ESET before. Actual results: Downloading speed slowed down from 24 Mbit/s to 1.2 Mbit/s. IE 8 and Opera download speed was not affected. The cause to the slowness was found in the default selected option "Advanced Process Monitoring" (Deep Guard). With the tick cleared Firefox performed with 24 Mbit/s download speed.
Did you contact F-Secure so they can fix their software? If yes, and if they said it's a Firefox issue, can you provide more information why they think so?
(In reply to Andre Klapper from comment #1) > Did you contact F-Secure so they can fix their software? If yes, and if they > said it's a Firefox issue, can you provide more information why they think > so? Yes, I have reported it to F-Secure today and will get back and report the response. I can not for sure say that it is a Firefox issue but as both IE8 and Opera work fine with the Advanced Process Monitoring" ticked it is a fair guess that F-Secure will blame the browser. We'll see.
Firefox doesn't know anything about Antivirus, Firewalls or other security features from third-party applications. This is no bug in Firefox as long it works without this third-party software. We don't know what this "Advanced Process Monitoring" feature is doing but it seems that is doing something wrong.
Well Matthias, neither do Chrome, Opera nor IE. There are virtually thousands of Google hits on the issue "Slow Firefox" so let's be open about this. The combo Firefox and F-Secure has got many thousands of users. If we can find the cause of this download problem, whether in Firefox or F-Secure, we will help a whole bunch of Firefox users. Erik
Unrelated - "Slow Firefox" is something different than "Slow Firefox with F-Secure"...
Well I agree but we will still say that Firefox is slow if it downloads slow. I should have added that fresh installs, safe modes and the whole shebang of tricks that I know of did not made a difference. We'll see what the F-Secure Wiz will say on Monday.
F-Secure responded today and said they were pleased to read that I had reported the problem to the isp, i.e. Comhem in Sweden who supply the F-Secure product. F-Secure informed that it is not exactly the same as the package the deliver. He also said it was safe to de-select the option "Advanced Process Monitoring was safe". I will write to Comhem today in an effort to get them to react on it. I have today visited a friend who had the same set as me and he had the same downloading problem. When removing the tick from the APM option it was okay. I'll keep you posted.
Thanks for the update !
I have today found that it is not just the special product that F-Secure supply to the isp Comhem. It is in fact also their own sharp product. I asked a person who do not use the same isp as I do. He uses the standard F-Secure Internet Security. He found the same download problem. The download speed with Firefox was 1-2 Mbit/s whilst IE gave 20 Mbit/s. When disabling the Advanced System Monitoring Firefox also gave 20 Mbit/s download. I will write to F-Secure tonight. We'll see! Erik
Hi Erik. Have you made any progress contacting F-Secure? Does this issue still exist?
Two years ago! I had to read the thread to remember and I very clearly remember. I never heard from the Fins. I do no longer use F-Secure, which I found to be causing slow downs not only on Firefox. As this is an interesting issue I will check with one of my neighbours who in fact still uses the same isp provided F-secure version. Since last time Firefox has gone through several updates. I'll get back on the thread here with an update. I personally think it was a Firefox code issue. Erik
Should we close this as INVALID or WORKSFORME?
I guess that's a question for Erik.. it sounds like a specific setting makes F-secure discriminate against certain applications on your system. I don't know what the setting does, but I'm guessing it applies special monitoring to the file activity from a certain process, slowing that application down by scanning all files it attempts to write or read. This setting seems to cause problems for other software too: https://community.f-secure.com/t5/Security/Internet-Security/td-p/10117
I thoght thar I had responded two ago but oviously it did not work out. Perhaps I should blame my Android Firefox:-) I don't kniw the status for this issue. I have tried to find but I know none using FSecure. The few I knew un-installed due to it's negative effect on processing and download speed. From my point of view this case is unsolved but closed. Erik
Thank you Erik! I'll close it and assume this problem was/is a bigger drawback for F-secure than for us :)