I have the same issue...

Please take a look at the technote below for assistance resolving this issue. 

http://support.veritas.com/docs/301124

If you read the Doc it says there are NO known issues with BE12.0, which is what I am using. Plus, I can't stop the services right now because I am running the super critical jobs that missed last night!

Please take a look at the technote below for assistance resolving this issue. 

http://support.veritas.com/docs/301124

Thanks for the link to the right Doc. I hope they get a hotfix for this before the next time change. I find it odd that they had a hotfix for 11d but didn't program one in for 12. Seems like an oversight to me!

Please check the following link for more information on the above issue :

http://support.veritas.com/docs/305909

Note : There is an open E-Track for this issue and Symantec has confirmed this as a known issue.

We only had our clocks change in the UK this weekend and when I came in on Monday morning, all my backups on BE 12.5 were listed as "Missed". However, they have all showed up as Missed again on Tuesday and again today, so clearly it is not just first-run backups that are failing.

I've had to manually run backups during the day (much to the annoyance of my users) because I can't risk going three days without any backups and with no long term fix in sight. Any ideas?