I'm having the same problem today. Never has an issue before but the bul uploader will load 8 to 12 pics from the ones I have chosen then it just feeeze. I have to log out and start again then it will work again for another 8 to 12 pics and then freeze again. Tried switching browers to IE from Chrome and the active X download does not even start so can not do any on that browser.
I've got 260 images to do !!!