Thanks for your reply.
I seem to remember seeing this post on the Mozillazine site

Attention!
People, experiencing Fast Dial slowness on Firefox 3,
try to add exception rule to AdBlock Plus for page "about:blank".
Thanks for this solution goes to mafi0z from userlogos.org.


If there are problems being caused by another Extension, in this case Adblock Plus, why is it that this problem was not apparent in Version 1.89.

Surely it would be a valuable exercise to reproduce this problem and discover the exact cause.

A number of users, including myself, have returned to Version 1.89 finding it preferable

This is of course undesirable as Version 1.89 is not fully set up for transparency among other things.

Thanks for your quick reply, Mafi0z.

I can see you have looked into this problem.

I remain a little unclear about your:

>This problem is not in FastDial, and only seems to occur in firefox 3<

What occurred I wonder in the change between 1.89 and 1.90 that brought on these problems.

I saw the following comment here:

1.9 slow down
by JC43 on June 15, 2008
Started with v1.89 which I found worked beautifully. Tried v1.9 (twice) and each time the working of Firefox 2 slowed alarmingly. Moving back to v1.89 brought everything back to full working speed. Maybe the new version is optimised for Firefox 3?

I am as you know a Firefox 2 user.
I had an intermittent problem with the background disappearing in Version 1.9

The problem disappeared immediately when I returned to using 1.89

I suppose my main preoccupation is this.
This seems like an excellent promotional opportunity for Fast Dial.
It would seem important that the code shipped be as trouble free as possible.
Do you not agree ?