Deadlock - deadlocked on lock resources

Hello,

We are running into D/B deadlocking issues time to time, we don't know why is happening... Here is the log:

Any help will be greatly appreciated..

==============[System Error Tracing]==============

[System  Name] : OSoftOptimizeManage

[Message Type] : ErrorMessage

[Job Name]     : CheckProcessState()

[DateTime]     : 10/23/2014 12:05:14 PM

[UserId]       : BPPUKUSER

[SqlException]

    Type      : System.Data.SqlClient.SqlException

    Errors    : System.Data.SqlClient.SqlErrorCollection

    Class     : 13

    LineNumber: 3

    Message   : {Transaction (Process ID 270) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.}

    Number    : 1205

    Procedure :

    Server    : UKBRIWBPCDBPT\UKOLTP

    State     : 56

    Source    : .Net SqlClient Data Provider

    TargetSite:

    HelpLink  :

==============[System Error Tracing  End ]==============