Forum Moderators: Robert Charlton & goodroi
The url-only problem [webmasterworld.com]
More importantly I would look for instances of "exact duplicate content" on the site: differing dynamic parameter order, differing dynamic parameters, www vs. non-www, multiple domains, http vs. https, differing URL capitalisation, etc.
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Notes:
Differing dynamic parameter order: shirt.php?size=16&colour=blue vs. shirt.php?colour=blue&size=16
Differing dynamic parameters: product.php?item=234 vs. product.php?item=234&printfriendly=on
Differing URL capitalisation: page.asp vs. Page.ASP etc.
It's funny what you get used to, isn't it. 18 months ago I was mortified and couldn't sleep nights, because my site dropped from #3 to #7 for our very competitive keyword. Today we're #30 and I'm just accepting it and contemplating life without (free) Google traffic
Hey-ho - life goes on. Thanks again, guys.
It is possible that today you are simply looking at a different datacentre than whatever you were looking at before.
Next time you disappear, it might be for far longer. Maybe this was a warning as to what is coming...