No no no!! Please do not keep up this silly test of using background images all over the place. The main reason I set my homepage and many of our clients' homepages to Google is because it loads quickly. All day, every day I have to remote desktop to our clients' machines to do testing and repairs. Loading up Google as their homepage now takes about 10 times longer because of the huge background image.
And more annoyingly I have to log in to change it back!! Please do not stick with this, or better still make it available to those who want it by making it an optional extra, rather than the default! You have already cost us much valuable time today. Thankfully it's just a 24 hour test - please don't turn it back on!!