Incremental backup fail!!!

Please can someone help me wth this failure message

Type: Information
Date and time: 10/14/2010 2:50:27 AM
Backup plan: Server 2003 Backup 10/12/2010 5:23:03 PM
Task: Incremental backup
Code: 262,145(0x40001)
Module: 4
Owner: Administrator@LDS
Message:
Error occurred while reading the file.
Additional info:
--------------------
Error code: 1
Module: 4
LineInfo: 7ceb2cdc9fb12027
Fields: function : ReadFile
Message: Error occurred while reading the file.
--------------------
Error code: 65520
Module: 0
LineInfo: bd28fdbd64edb8bc
Fields: code : 2147943850
Message: Insufficient system resources exist to complete the requested service