Tag: safari

Safari Error: “The website requires a client certificate”

While experimenting with LDAP connections in Safari, errors like this one started popping up:

“The website _____ requires a client certificate”

A dialog would open, listing some old MobileMe certificates. Apparently if any old, expired or corrupt MobileMe certificates are still lodged in the Keychain, you may get this error sometimes. MobileMe has been disabled and signed out on my Mac for years, but the fact that the certs were still there caused the problem.

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When colspan property doesn’t appear to work in Firefox or Safari

When building web applications I often use display styles to show or hide divs or table rows as needed. On one project, I found that the “colspan” property did not seem to work in Firefox or Safari. This was because I had incorrectly used display:block to style the TR element, instead of display:table-row. A demo is below, and the code follows.

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Safari Slowdowns

After upgrading to 10.4.7 I started noticing frequent slowdowns in Safari. The “Spinning Rainbow Cursor of Death” was becoming a constant occurence.

There are plenty of recommendations about how to fix this common issue.

  • Delete the contents of the icons folder in ~/Library/Safari
  • replace the syndication agent at
    /System/Library/PrivateFrameworks/Syndication.framework

    with a copy from a Mac OS X system that does not have problems (subscription required)

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