Firefox 3.5.4 in Karmic extremely slow at one site.

Bug #466250 reported by Orionds on 2009-10-31
This bug affects 3 people
Affects Status Importance Assigned to Milestone
firefox-3.5 (Ubuntu)

Bug Description

Binary package hint: mozilla-firefox

I just installed Ubuntu 9.10 on 1 PC and my Asus notebook. I upgraded to Firefox 3.5.4 on both these machines and also on another PC still running 9.04 (Jaunty).

Asus notebook: Celeron M420, 1G ram, 80G hard disk.
PC A (Karmic): Sempron single-core 2500+, 1G ram, 200G hard disk, Nvidia GeForce FX 5500 256M.
PC B (Jaunty): Athlon XP single-core 2500+, 1G ram 200G hard disk, Nvidia GeForce FX 5200 128M.

Site in question is the Hong Kong government's internet leisure link booking.

1st link:
2nd link: Click on "Facility booking - basic version" and pop-up appears to check config.
3rd step: Enter letters then load next page.

Before, loads in Jaunty using Firefox 3.5.4 (3 days ago, just before 9.10 release) on all 3 machines for each link was very snappy and fast. No times were recorded then, of course.

However, now in Karmic on the Asus notebook and PC A, loading has come to a crawl. Here are some times I recorded using PC A:

1st link: 67 seconds
2nd link: 74 seconds
3rd step: 45 seconds

Using Jaunty, in PC B, I got these times:

1st link: under 2 seconds
2nd link: under 3 seconds
3rd step: under 2 seconds

There is no speed problem in Karmic using Firefox with other sites which include my banking site login. These appear normal compared to Jaunty and possibly even faster.

One difference between my Jaunty and Karmic installs is using ext3 and ext4 respectively. I have not tried using ext3 with Karmic.

newacct (newacct) wrote :

just an idea: have you tried disabling IPv6 DNS? go to about:config -> find network.dns.disableIPv6, if it says false, right click and select toggle

Orionds (shamrock-d) wrote :

Hey, thanks a lot. It worked. Thanks for bringing it up. It's a whole lot faster now. Thanks again.

Micah Gersten (micahg) wrote :

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 417757, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.

affects: firefox (Ubuntu) → firefox-3.5 (Ubuntu)
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