Pasting a specific string into code block makes page unresponsive in Chrome

When I paste a specific string into a code block macro, then the page becomes unresponsive and Chrome offers to kill the page.

Steps to reproduce:

1. Use Google Chrome 17
2. Create a new blank page
3. Insert a code block macro
4. Paste the following string into the code macro:
   /subsystem=datasources/jdbc-driver=oracle:add(driver-name="oracle",driver-module-name=

Result:
The page becomes unresponsive and after some time and Chrome offers to kill the page.

I noticed that pasting the above string works fine until the last comma. When I gradually append a letter, pasting takes noticably longer with each letter.