This happens on 2 machines, a iMac running Lion and a Mini also running Lion. They are both going to the same MBL that has the latest firmware.
After a reboot the backups seem to go fine, then after a while or maybe because a big file is involved, this time a 40gig file, it just stalls. It has been stuck in 5.38 gigs of 43.2 since last night.
Does anyone else have this problem? Is it a Lion problem or a MBL problem? Any Suggestions?