Not sure why that would happen. However, I would recommend patching with SP1 for BE 2010, and any available patches thereafter.
Post the results, and if it helped solve your issue, you can close off with the solution.
Check for the following in the backup job properties--schedule --start time and no later than time
Increase the time there and see if this helps,
I did not get what you mean By "C2T"???
C2T means a Copy-to-Tape-Job. This is a job, that begins when the Backup to Disk ends.
I have SP1 installed and there are no other updates from Live Update.
I can't set any scheduler because this is a job that copy the data after an existing job.