Boot Time Protection in NIS 2011 & Win 7

Hi all, I’m running W7 x64 and since installing NIS 2011 a few days ago each time I boot my pc it goes into Startup Repair mode and takes about 15 mins before it reboots ok into Windows. Norton then comes up saying “a fix is in progress” and it takes about 2 mins or so for the AV and antispyware components to appear as “on” during which time it informs me that they are “out of date” even though it updates ok. This was obviously very annoying so I turned Boot Time Protection to “off” (default is “normal”) and since then my pc boots up everytime with no problems. Has anyone else noticed this? Is it a bug? Any comments would be appreciated. Thanks.