To my surprise while manually checking the IP SLA Configs on some Cisco 2821 Voice Gateways today, I discovered abandoned IP SLA Configs. Also the Entry Number is way high. First entry is at 1 the others go above 200 
Example:
Entry number: 199
Owner:
Tag:
Type of operation to perform: tcp-connect
Target address/Source address: 10.1.10.20/0.0.0.0
Target port/Source port: 23/0
Operation timeout (milliseconds): 60000
Type Of Service parameters: 0x0
Control Packets: enabled
Schedule:
Operation frequency (seconds): 60 (not considered if randomly scheduled)
Next Scheduled Start Time: Start Time already passed
Group Scheduled : FALSE
Randomly Scheduled : FALSE
Life (seconds): Forever
Entry Ageout (seconds): never
Recurring (Starting Everyday): FALSE
Status of entry (SNMP RowStatus): Active
Threshold (milliseconds): 5000
Distribution Statistics:
Number of statistic hours kept: 2
Number of statistic distribution buckets kept: 1
Statistic distribution interval (milliseconds): 4294967295
History Statistics:
Number of history Lives kept: 0
Number of history Buckets kept: 15
History Filter Type: None
Enhanced History:
Aggregation Interval:60 Buckets:100
Aggregation Interval:1800 Buckets:100
