In my local Firefox account, in the "chrome" directory, I put a file called "userContent.css" which contains:
Code:
td.row1 { background : #BBE4A6 ! important }
td.row2 { background : #B8D0F0 ! important }
That was just as a test (and I've forgotten to remove it), but it works fine, exchanging the alternate post background colours. E.g. in my Firefox, your initial post above comes out on the pale green background, instead of the pale blue.
However, playing that game will only affect Firefox.
I can't think of any way you can have had the same effect manifesting in both IE and Firefox simultaneously.
However... one thing that occurs to me... might you have somehow caused your firewall to block the WrongPlanet CSS file?
The active one comes from wrongplanet.cachefly.net (style.css). If your firewall blocks that site, you'd lose formatting. I think you'd also lose most avatars.
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In fact... just to see what happens, I've just made my firewall block wrongplanet.cachefly.net and it does just what I expected: the page displays very plainly and your avatar disappears.
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"Striking up conversations with strangers is an autistic person's version of extreme sports."
Kamran Nazeer