svg/css/text-gradient-shadow.svg fails on Qt 4.8 and Qt 5.0 too.
Created attachment 155484 [details]
compare to Mac's result (Qt 4.8)
click on review patch to see the diff
Created attachment 155485 [details]
compare to Mac's result (Qt 5.0)
Looking at the pixel expectations, it looks like only the Mac port is able to draw the shadows with the right colors instead of black.
=== Bulk closing of Qt bugs ===
If you believe that this bug report is still relevant for a non-Qt port of webkit.org, please re-open it and remove [Qt] from the summary.
If you believe that this is still an important QtWebKit bug, please fill a new report at https://bugreports.qt-project.org and add a link to this issue. See http://qt-project.org/wiki/ReportingBugsInQt for additional guidelines.