What is that?

[420benz]

Most of my icons changed to the A.Don't know why,but i am sure it was something i did.
Sorry the picture did not upload but it looks like this @

 

[balamw]

Have you tried logging off and logging back on or rebooting the system yet?

The @ icon is the default for some kind of web links.

B

 

[dan1eln1el5en]

Get Onyx for OS X and clear the caches for the desktop, apps and so on.

 

[420benz]

Have you tried logging off and logging back on or rebooting the system yet?

The @ icon is the default for some kind of web links.

B

Yes. I did it twice but to no avail.

 

[simsaladimbamba]

Sorry the picture did not upload

How to attach an image to your MR post.​

 

[420benz]

This is what i see.

 

[simsaladimbamba]

This is what i see.

Taking screenshots in Mac OS X

As to your "problem", those are hyperlinks someone (you?) stored in your Dock. Either remove them via right-clicking on them or dragging them off. Or click on them to find out where they go to or where they are located in Finder.

To learn more about Mac OS X: Helpful Information for Any Mac User by GGJstudios​

 

[420benz]

OK: Last week i posted How to open PDF files not using Preview. The suggestion was to use Adobe Reader. So i changed it to open ALL in AR and that is what @ is. I changed it to Firefox and all of the icons changed to the Safari icon. I hope Preview does not came back.