NoScript 1.9.9.14 Conflict with AVG Free 9.0

[progan01]

Two days ago I installed AVG Free version 9.0, replacing 8.5 which is soon to go out of support. My machine is an HP Pavilion A000, 3GHz, 1Gb RAM, running Windows XP Home Edition SP3.

In the process of installation, AVG informed me that a certain piece of software was incompatible with AVG 9.0 and dumped me to the Add/Remove Programs Control Panel to take care of it. The specified name was not there; I installed AVG anyway, in spite of the warning.

Immediately I began experiencing long load times on Firefox pages. In some cases pages would not load at all. Troubleshooting showed me the problem does not exist with NoScript 1.9.9.14 disabled. Re-enabling it brings back the long load times and blank pages.

How do I resolve this issue? Right now I think I must uninstall AVG 9.0, uninstall NoScript, re-install AVG 9.0 and then re-install (not disable and re-enable) NoScript. But I have no assurance this will work. Has anybody else seen this behavior, or have a better work-around? Or find out why AVG 9.0 Free doesn't work with NoScript?

Your help is greatly desired.

---->P!

[Alan Baxter]

In the process of installation, AVG informed me that a certain piece of software was incompatible with AVG 9.0 and dumped me to the Add/Remove Programs Control Panel to take care of it. The specified name was not there; I installed AVG anyway, in spite of the warning.

The root of the problem could be the software AVG detected. Even though its name may not appear in Add/Remove Programs, the detected remnants may be causing a problem, as AVG warned. What is the name of the software AVG warned you about? There usually are tools available to thoroughly clean the software out, but we need to know its name.

[therube]

Try disabling AVG LinkScanner & AVG Email Scanner & see if the problem subsides.
If so, re-enable Email Scanner.
Still a problem? If not, re-enable LinkScanner. Did the problem return?

If so, again disable LinkScanner.


2673 AVG 9.0 - Conflicting applications

[progan01]

I'm mid-way in my experiment to try installing NoScript after re-installing AVG 9.0. Thanks for the suggestions, which I will try if my experiment fails. I'll keep you posted.

---->P!

[progan01]

@Alan: The software detected apparently was NoScript itself. Reinstallation of AVG 9.0 Free after removing NoScript did not bring up the warning. I'm fairly confident it's NoScript causing the error.

@Rube: Disabling the AVG Link Scanner had some effect, but there is still a noticeable drop in performance loading pages. The performance hit goes away entirely when NoScript is disabled. My guess, without examining the code, is that both packages are accessing the same resources. NoScript is NOT in the list of software known to have conflicts with AVG.

I'm on the horns of a dilemma. I want XSS and clickjacking protection but I also need link scanning, and it appears I can't have both. I don't have time to watch the software fight for my machine, so pending further developments, I'm disabling NoScript and alerting the development team of this issue.

Thanks for your help.

--->P!

[Alan Baxter]

@Alan: The software detected apparently was NoScript itself. Reinstallation of AVG 9.0 Free after removing NoScript did not bring up the warning. I'm fairly confident it's NoScript causing the error.

I doubt greatly that AVG reports NoScript as incompatible with AVG 9.0 during AVG's installation. I see no mention of that on the AVG site either. I do not recall any of the other NoScript and AVG users reporting they've had to disable NoScript to get AVG to work properly.

Problems are often caused by extension conflicts. Does your problem persist if you disable all of your extensions except NoScript? You could test your Firefox performance in a test profile that has only NoScript installed. Do you still have your performance problem there?