Hi MyLee,
By default BEWS has Job Logs information set at: Summary Information Only. This would tell you the bare minimum for your job like time taken, bytes backed up, tape used etc.
To get what you want in terms of file details, look at increasing the amount of information shown.
You can do this through: Tools --> Options --> Job Logs, and choose
Summary information, directories, files, and file details.
With this level of information though, the job log will increase in size, but it should be what you're looking for.
As for slow backups, lots of reasons really...amount of files, switch speeds, network port speeds, type of drive etc.
Look over these 2 links I have also added in:
http://seer.entsupport.symantec.com/docs/231488.htm
http://seer.entsupport.symantec.com/docs/285756.htm
Laters!