User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a5pre) Gecko/20100524 Minefield/3.7a5pre Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; WOW64 en-US; rv:1.9.3a5pre) Gecko/20100524 Minefield/3.7a5pre In respect to the bug no. 556967 "Re-enable aero glass once bug 555182 is fixed" https://bugzilla.mozilla.org/show_bug.cgi?id=556967 I must mention that it doesn't work under "widows 7 64bit" at all, since the buttons, tabs and menu items didn't become transparent at all, instead the mentioned components titles and colors (they appeared in white) are mixed up together in a very bad way. Reproducible: Always Steps to Reproduce: - Install the 24/5/2010 nightly build for Firefox - run Firefox Actual Results: the Firefox tabs and menu items become mixed together and I'm unable to read the text at all Expected Results: The tabs and menu item become fully transparent as it happen successfully under widows 7 32bit edition

WFM on Win7 64bit. Do you have D2D acceleration enabled by chance? a Persona? (Please retest in safe mode: http://support.mozilla.com/kb/Safe+Mode)

Yes, the D2D acceleration was enabled and the issue now resolved when i set "gfx.font_rendering.directwrite.enabled" to false

Also i must mention that the same issue occurred under my windows 7 32 bit when i set "gfx.font_rendering.directwrite.enabled" to true "mozilla.widget.render-mode" to 6 Thanks,

Please report what you see in the bug i'm going to mark this as dupe.