So far the only bug my fiancee and I have experienced is that signing into her account the home screen stays on my profile. We have to manually push it to go to hers. Although we've only used it for Netflix since I got the update sometime last week. In fact I wouldn't have realized if she hadn't put netflix on over the weekend.
Are you getting any text corruption ? I got a 500mb update earlier to it but still have text corruption in certain areas such as holding down Xbox button to turn off console etc...