http://seer.entsupport.symantec.com/docs/306552.htm
I did the work around and now I'm getting:
With SEP installed after following Document ID: 306552
Backed up 108131 files in 8062 directories.
Processed 44,008,393,386 bytes in 19 minutes and 51 seconds.
Throughput rate: 2114 MB/min
Compression Type: Hardware
The following, temporary solution, will still work until Symantec Endpoint Protection MR4 has been installed:
1. Exclude the following processes from within Symantec Endpoint Protection Manager (Firewall Policy | Rules | Add a rule to allow an application):
(Change C:\ as needed depending on which root volume the Media Server or Remote Agent is installed to)
• C:\Program Files\Symantec\Backup Exec\beremote.exe
• C:\Program Files\Symantec\Backup Exec\beserver.exe
• C:\Program Files\Symantec\Backup Exec\bengine.exe
• C:\Program Files\Symantec\Backup Exec\benetns.exe
• C:\Program Files\Symantec\Backup Exec\pvlsvr.exe
• C:\Program Files\Symantec\Backup Exec\BkUpexec.exe
C:\Program Files\Symantec\Backup Exec\RAWS\beremote.exe
2. Change the following File System Auto-Protect setting in Symantec Endpoint Protection Manager for each profile where an associated client has the Remote Agent for Windows Servers installed (Policies Tab | Antivirus & AntiSpyware | Right Click | Edit | File System Auto-Protect | Advanced Scanning and Monitoring):
• Change "Scan when a file is accessed or modified" to "Scan when a file is modified"
Uncheck "Scan when a file is backed up"