Blurry/pixelated icons at random in Finder windows

Don't hold your breath. They haven't fixed it since it first started happening in 10.6.0 and the response I got to the bug report said it would NOT be fixed in 10.6.x.

10.9 fixes the issue.

Have you tested it with the same Mac or with a new one?

I ask that because I guess that this issue depends on the specific Mac hardware, and in particular the graphic chip. In my case, I did not have such issue with Mac OS X 10.6.7 and earlier (older Macs since 1989; about 1,000 Macs or so in total), but I have it with new Macs, as indicated above.

I applied Mavericks as an upgrade on an iMac (late 2009) that had had the problem even after a total re-format, clean install of Lion and/or Mountain Lion. I agree that it's limited to certain hardware.

My other Macs both have been upgraded to ML, and have never had an issue. They are a 2012 Mac Book Pro and late 2010 Mac Book Air.

As stated on https://code.google.com/p/chromium/issues/detail?id=159334, you should execute the following command in a Terminal and then just log out and log back in, it will do the trick.

/System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.fram ework/Support/lsregister -kill

Please note that if many users are logged into the system, you may have to log out all of them beforehand to get results. It works for me with 10.8.4...

HTH

Mikael

Thanks, but in my case it did not fix the issue on Mac mini, OS X Mountain Lion (10.8.4), Booting from internal Fusion Drive.

I believe it depends on the graphic chip of the Mac, because in two other iMacs never arose.

It's a pity it did not worked for your case.

Did you tried to restart after executing the command instead of logging out and back in?

There may be more than one issue that cause the blurry icons. In my case, it was after an self-update of an app. (Chrome, Adium...). Only the updated application had the blurry icon. I can ensure that the lsregister -kill command + logging out worked well when I was the only user logged into my system.

Yes. There is only one user, which is the Admin. The issue arose after installing OS X 10.8.3 on a brand new Mac mini. No issues on other brand new iMacs, so I guess it is hardware-related.

Absolutley worked for me, thanks to all.

I posted earlier, on February 4, 2013, in response to Demjan's May 2012 recommendation about deleting the "thumbnails.data" file, shutting down and restarting, but Mikaël Barbero's 8/7/2013 post fixed the problem faster and easier. Will see if it sticks.

Thanks, Mikaël Barbero.

You're welcome Adayapple! I'm glad it helps.

Mikaël Barbero Thank you! it works

Mikaël Barbero'scommand has no effect for me. Even after a restart and not just a logout. Lots of icons are awfully pixelated.

Macpro mid 2010, Mountain Lion 10.8.4, 16GB of RAM, Apple LED 27

I am getting a "No such file or directory" error. Running 10.8.4. Any chance there is a different folder address I could use?

Could you copy/paste the command you typed please? lsregister is located in the same folder in 10.8.4 as in previous versions.

Best regards

Mikael