It appears I created the job a few days before 1/25/2005. As I mentioned in my original post, the job immediately started having this problem, but cleared up after about 2-3 days.
Nothing appears in the Alerts tab when the job hangs.
The backup of C:\ is sucessful.
After stopping and restarting services, the last locked up backup actually gave me a failure notice. When opening the Job History, I get an "Unexpected end of input" error. Here is what exists of the log:
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Job server: DC1
Job name: TS1 Backup
Job started: Friday, February 10, 2006 at 2:31:35 AM
Job type: Backup
Job Log: BEX_DC1_00606.xml
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Drive and media mount requested: 2/10/2006 2:31:35 AM
Drive and media information from media mount: 2/10/2006 2:31:35 AM
Drive Name: HP 1
Media Label: LTO000002
Media GUID: {95ed0dda-497f-478a-9175-2b079a57c075}
Overwrite Protected Until: 12/30/9999 6:00:00 PM
Appendable Until: 12/30/9999 6:00:00 PM
Targeted Media Set Name: MED_MEDIA
======================================================================
Media operation - append.
Hardware compression enabled.
======================================================================
TS1AOFO: Started for resource: "\\TS1\C:". Advanced Open File Option used: Microsoft Volume Shadow Copy Service (VSS).
The snapshot provider used by VSS for volume C: - Microsoft Software Shadow Copy provider 1.0 (Version 1.0.0.7).
AOFO: Started for resource: "\\TS1\Shadow?Copy?Components". Advanced Open File Option used: Microsoft Volume Shadow Copy Service (VSS).
The following volumes are dependent on resource: "C:" .
The snapshot provider used by VSS for volume C: - Microsoft Software Shadow Copy provider 1.0 (Version 1.0.0.7).
Network control connection is established between xxx.xxx.xxx.xxx:32881 <--> xxx.xxx.xxx.xxx:10000
Network data connection is established between xxx.xxx.xxx.xxx:32905 <--> xxx.xxx.xxx.xxx:3431
\\TS1\C:
Family Name: "Media created 2/10/2006 12:00:04 AM"
Backup of "\\TS1\C: "
Backup set #9 on storage media #1
Backup set description: "TS1 Backup"
Backup Type: Full - Back Up Files - Reset Archive Bit
Backup started on 2/10/2006 at 2:33:16 AM.
Backup completed on 2/10/2006 at 2:45:51 AM.
Backed up 36557 files in 4674 directories.
Processed 5,823,888,841 bytes in 12 minutes and 35 seconds.
Throughput rate: 441 MB/min
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Network control connection is established between xxx.xxx.xxx.xxx:32881 <--> xxx.xxx.xxx.xxx:10000
Network data connection is established between xxx.xxx.xxx.xxx:33168 <--> xxx.xxx.xxx.xxx:3529
\\TS1\Shadow?Copy?Components \\TS1\Shadow?Copy?Components
Family Name: "Media created 2/10/2006 12:00:04 AM"
Backup of "\\TS1\Shadow?Copy?Components \\TS1\Shadow?Copy?Components"
Backup set #10 on storage media #1
Backup set description: "TS1 Backup"
Backup Type: Full - Back Up Files - Reset Archive Bit
Backup started on 2/10/2006 at 2:45:53 AM.