Got the following bug report from news:netscape.public.mozilla.editor ... -------- kristofer <kristofer@myrealbox.com> wrote: I think that the composer is great the way it is. allthough i still find it slow when editing pages with a complex table set up. take a look at my template if you want try to edit it and see why it is so slow. is it me, my computer or mozilla? http://cat.nyu.edu/randomb/template.html -------- Playing with the HTML source a bit, it looks like the slowness comes from 2 things, specifying widths on tables and table cells, and the background image which has transparent pixels (compositor issue). Removing either the widths from the tables and table cells, or removing the background image, makes things a bit faster. Removing both makes things very responsive. Cc'ing both karnaze and kmcclusk for comment. I'll attatch the test case and image.

I copied the 3rd attachment locally (but referencing the same background image) and typed into the cells in composer and it was fast. What am I missing?

Typing in the nested table in the outer table's left column is fast, typing in the right column of the outer table should be a lot slower.

I can reproduce with 2002012803 build on WINNT. It is slow typing in the right column, but reasonably fast typing into the left column.

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(In reply to comment #3) > Created an attachment (id=64524) [details] > Smaller Test Case Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9b2pre) Gecko/2007112702 SeaMonkey/2.0a1pre