A few bloggers in the UK, most using TalkTalk as their ISP, are reporting inability to access any Blog*Spot blogs.
For right now, please use a proxy server to access all Blog*Spot blogs.
>> (Update 5/29 13:30): It's possible that TalkTalk caused the problem, which was anticipated.Over the course of the last 7 days, we have been upgrading our network across more than 100 exchanges nationwide in order to provide our customers with a better landline/broadband service. As a consequence, some of you may have experienced intermittent call quality & connectivity issues for which we apologise.
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For some time now, blogs published to a custom domain, and previously working, have been (apparently) randomly yielding a new monolithic error when being read.Not Found
Error 404
Recently, owners of blogs supposedly not associated with custom domains have complained of this oddity also.

Why not at leastThe blog you were looking for was not found.
or maybe evenBlog not found
Sorry, the blog you were looking for does not exist. However, the name xxxxxxx is available to register!
If your BlogSpot blog, not now and never previously part of a custom domain, is showing this symptom, please comment here with the blog name. If you're suffering from this idiosyncrasy, silence won't get the problem fixed.
>> (Update 5/28): Blogger Support has suggested a possible (distant) connection between template corruption and observation of this symptom.
>> Forum thread links: bX-*00080
>> Copy this tag: bX-*00080
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