User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-GB; rv:1.9.1.3) Gecko/20091020 Ubuntu/9.10 (karmic) Firefox/3.5.3 (.NET CLR 3.5.30729) Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-GB; rv:1.9.1.3) Gecko/20091020 Ubuntu/9.10 (karmic) Firefox/3.5.3 (.NET CLR 3.5.30729) When I click the Private Browsing icon in the lower-right corner of the Firefox window, the Private Browsing info page pops up as expected. However, the zoom also decreases by one level. I have not yet tested to see if the zoom returns to normal upon exiting Private Browsing mode, but I believe it does. Reproducible: Always Steps to Reproduce: 1. Open Firefox. 2. Click the Private Browsing icon in the lower right. 3. Observe the size of the text in the "you are now in Private Browsing mode" info window. Actual Results: Text decreased in size by one step. Expected Results: Text is the same size regardless of private browsing mode.

This issue has been fixed for Firefox 3.6 (and Firefox 3.6 Beta 1 was released a few days ago), but unfortunately it won't be fixed in 3.5.x releases.