Sysdatabases in SQL server instance SVRX is empty (4270375)

Error logs displays;

Event Type: Error
Event Source: SQLWRITER
Event Category: None
Event ID: 24581
Date: nn/nn/nnnn
Time: nn:nn:nn
User: N/A
Computer: Machine_name
Description:
Sqllib error: sysdatabases in SQL server instance Instance_name is empty.

Permission issue.
NT Authority\System System Account is not having the required permissions

Grant the NT Authority \System account the SysAdmin role.
When Litespeed runs a backup, it calls the SQLWriter process.It communicates with SQL Server via this account.

http://www.sqlservercentral.com/Forums/Topic384319-146-1.aspx

Sqlwriter.exe is a program/process associated with Microsoft SQL Server from Microsoft Corporation. It allows backup and restore applications to operate in the Volume Shadow Copy Service (VSS) framework. You can enable or disable it. It can be found on your disk at C:\Program Files\Microsoft SQL Server\90\Shared\sqlwriter.exe You may also find the prefetch file named SQLWRITER.EXE-066D90AE.pf.

What Is Volume Shadow Copy Service?
The Volume Shadow Copy Service provides the backup infrastructure for the Microsoft Windows XP and Microsoft Windows Server 2003 operating systems, as well as a mechanism for creating consistent point-in-time copies of data known as shadow copies.

http://technet.microsoft.com/en-us/library/cc757854(WS.10).aspx