Event ID 1006, MSExchangeDiagnostics - Logical To Physical Size Ratio' sustained a value of '0.86'

Hi All,

 I am getting below event Log very frequently.

also i know how to disable it, but i need the permanent solution to solve this completely.

Log Name:      Application
Source:        MSExchangeDiagnostics
Date:          4/27/2014 10:36:37 AM
Event ID:      1006
Task Category: Triggers
Level:         Error
Keywords:      Classic
 
Description:
The performance counter '\\MAILServer\MSExchangeIS Store(Mailbox Database)\Logical To Physical Size Ratio' sustained a value of '0.86', for the '10' minute(s) interval starting at '4/27/2014 7:25:00 AM'. Additional information: None. Trigger Name:DatabaseLogicalPhysicalSizeRatioTrigger. Instance:Mailbox Database