After revision r85586 [1], both the 32-bit and 64-bit debug GTK bots are always timing out because of the layout test introduced with that commit. I've quickly skimmed over the layout test and, wild guessing, it occurs to me that perhaps the doTest() is never being executed because of some reason. This has been failing for some time now, so I'll skip it while we don't find the root reason behind it. CCing people involved in that commit. [1] http://trac.webkit.org/changeset/85586
Forget about this, it is not this test the one that is timing out on the GTK bots, but something else, probably in media/ Still, it seems the problem started happening after revision r85586 so perhaps Dan or Simon could drop some light or just some more wild guessings to help understand why that change in RenderLayer could be causing this weird stuff now. Or perhaps it's just a problem in the bots that started happening after that point, I'll investigate that as well. In any case, I'm now resolving this as INVALID. Sorry for the noise