Generic SQL Error affecting user adoption on case creation

hi, help!

frustrated users after persistent generic SQL error when users save case on creation, run a trace and got the following:

Crm Exception: Message: Generic SQL error., ErrorCode: -2147204784, InnerException:
Microsoft.Crm.CrmException: Generic SQL error. ---> Microsoft.Crm.CrmException: Generic
SQL error. ---> System.Data.SqlClient.SqlException: Transaction (Process ID 202) was
deadlocked on lock resources with another process and has been chosen as the deadlock
victim. Rerun the transaction.

Type: Microsoft.Crm.CrmException
>ErrorCode: 0x80044150:
>Message (18): Generic SQL error.
>StackTrace: present: 451DD7B6
>PluginTrace length: 155
>>>>>> PluginTrace (155):
>[Microsoft.Crm.Service.ObjectModel:
Microsoft.Crm.Service.ObjectModel.CasePostCreatePlugin]
>[ffde44b1-a685-4948-85b8-e4091bc2a98b: CasePostCreatePlugin]
>
><<<<< PluginTrace:
>>>>>> EXCEPTION: 1
>Type: Microsoft.Crm.CrmException
>ErrorCode: 0x80044150:
>Message (18): Generic SQL error.
>StackTrace: present: A9C85398
>no PluginTrace
>>>>>> EXCEPTION: 2
>Type: Microsoft.Crm.CrmException
>ErrorCode: 0x80044150:
>Message (18): Generic SQL error.
>StackTrace <null>
>no PluginTrace
>>>>>> EXCEPTION: 3
>Type: System.Data.SqlClient.SqlException
>Message (149): Transaction (Process ID 202) was deadlocked on lock resources with another
process and has been chosen as the deadlock victim. Rerun the transaction.
>StackTrace: present: E5055931
>PluginTrace length: 155

>[Microsoft.Crm.Service.ObjectModel:
Microsoft.Crm.Service.ObjectModel.CasePostCreatePlugin]
>[ffde44b1-a685-4948-85b8-e4091bc2a98b: CasePostCreatePlugin]

any thoughts