I am finding that since early this morning (Jan 25th) WebPageTest has been behaving a little differently that usual.
Firstly, When the test starts I still get the brown rectangle telling me that my test is waiting to start instead of the yellow rectangle telling me that the test is under way.
Secondly, also since this morning WebPageTest has been unable to download images from my site generated by phpThumb during testing:
I can download the images OK in my browser and I cannot find any other tools (pingdom, zoompf and others) that have the same problem.
I’m not saying that these two issues are connected, only that I noticed both changes in behaviour at the same time.
The only change I have made the the site under test recently was some lines in .htaccess allowing me to refer to the phpthumb images using urls without a querystring and this worked perfectly well for about 48 hours before the problem in WebPageTest showed up.
Any help appreciated.