It seems that you can edit pretty much everything in your public profile except the "signature" line. There is no pencil icon for that line available. There should be.

 

Looks like I can under MOD let me know what you want to say ill change it

 

Change "current" to "former".

 

Thanks Kevin.

They should change that. You ought to have control over your own signature.

 

i was not aware it was that way not sure when it was changed

 

Not sure if this has changed again since you posted originally (missed it), but I am able to modify my signature. Click "User CP", then "Edit My Signature". Make any changes you want in the text box then click "Save Signature".