Using Google Chrome to edit Apex code / VF Pages in the Browser directly from test.salesforce.com. This has worked well for me (way better than the Developer Console or Eclipse - my programs are pretty small)
However, recently (Summer 13?) the line numbers displayed in the code editor window have disappeared - I can still edit the code, but both the line numbers, and the "Go To" (Control-G) functionality is now gone in Google Chrome.
They still work in Internet Explorer.
As far as I can tell, my Chrome is up-to-date...
Also, the Chrome editor is underlining the code, almost as if it's functioning like a Word Processor -
Is this a simple Chrome setting?