Validation Oddity

My W3C logos are gone?

[D_Blackwell]

I went to double check some recently updated pages and found that my W3C logos for HTML and CSS were gone. Source code showed the <img src=""> to be stripped out? I went to my files and everything was in order. How can this happen?

I revalidated by upload and did find some minor errors had creeped in (which I am repairing), but I've never seen anything like this. Who can do that and how?

[mnamesir]

Pretty sure that someone would need to have read and write access- basically, they would need to have access to your FTP site - there are a few exploits to get the listing of a directory on a web server, but I'm pretty sure someone would need to have RWX on the file to change it.
Are you running a personal firewall or anything like that? Sometimes these can strip or add weird items. Are the images hosted on your site, or a 'foreign' site?

Outside of that, I really haven't come across that myself

[D_Blackwell]

It's the darndest thing I've ever seen. Four HTML pages, two CSS pages. Everything works fine, looks fine -- but when I upload it and go to look at it....

The <img src="..." width="..." height="..." alt="" /> is just gone. When I look at the source code, there is just an empty line. Two images on each of four pages.

I double check original files to be sure I'm not crazy, and everything is as it should be.

?

[encyclo]

You've just installed some ad-blocking software, haven't you?! Many ad-blocking programs remove graphics which are 88x31 pixels - a standard ad format, and used for the W3C logos. Disable ad-blocking, and the logos will reappear!

[D_Blackwell]

encyclo,

Well I'll be horn swaggled!

The other day I noticed that I wasn't using the Norton blocker, so I went ahead and switched it on. I'm already running the one from the Google toolbar + Adaware + Spybot, so what the heck?

I just turned it off, and two of the pages came back in IE6, and they all returned in NN7 and Opera 7. IE refused to return to normal despite multiple refreshes and a restart. I re-uploaded everything to my server, and poof - good as new.

You have saved someone's sanity in your very first post! I would never have had reason to make the connection.