SP2 Will Not Install..... Help?

I'm at wits end - Been trying for days to upgrade my SQL 2005 Cluster to SP2
without any luck?

It's a four(4) node, 32-bit, W2K3 R2 Active, Active, Active, Passive Cluster.
My last attempt was moving all instances (and DTC) to the Passive node to no
avail.

Here's a copy of my Summary.txt file:
Time: 04/07/2008 12:07:07.485
KB Number: KB921896
Machine: NJBLKSRV6
OS Version: Microsoft Windows Server 2003 family, Enterprise Edition Service
Pack 2 (Build 3790)
Package Language: 1033 (ENU)
Package Platform: x86
Package SP Level: 2
Package Version: 3042
Command-line parameters specified:
Cluster Installation: Yes
Log Location on Passive Nodes:
(NJBLKSRV6) C:\Program Files\Microsoft SQL Server\90\Setup
Bootstrap\LOG\Hotfix
(NJBLKSRV3) C:\Program Files\Microsoft SQL Server\90\Setup
Bootstrap\LOG\Hotfix

**********************************************************************************
Prerequisites Check & Status
SQLSupport: Passed

**********************************************************************************
Products Detected Language Level Patch Level
Platform Edition
Setup Support Files ENU 9.2.3042
x86
Database Services (DB3) ENU RTM 2005.090.1399.00
x86 ENTERPRISE
Database Services (DB4) ENU RTM 2005.090.1399.00
x86 ENTERPRISE
Database Services (MSSQLSERVER) ENU RTM 2005.090.1399.00
x86 ENTERPRISE
SQL Server Native Client ENU 9.00.1399.06
x86
MSXML 6.0 Parser ENU 6.00.3883.8
x86
Backward Compatibility ENU 8.05.1054
x86
Microsoft SQL Server VSS Writer ENU 9.00.1399.06
x86

**********************************************************************************
Products Disqualified & Reason
Product Reason

**********************************************************************************
Processes Locking Files
Process Name Feature Type User Name
PID
ResrcMon.exe SQL Server Native Client Application
ADDMZ\_MSCS-BES 928
ResrcMon.exe SQL Server Native Client Application
ADDMZ\_MSCS-BES 1732
ResrcMon.exe SQL Server Native Client Application
ADDMZ\_MSCS-BES 4144
MSSQLSERVER SQL Server Native Client Service
3772
SQLSERVERAGENT SQL Server Native Client Service
3828
MSSQL$DB4 SQL Server Native Client Service
6776
SQLAgent$DB4 SQL Server Native Client Service
7436
MSSQL$DB3 SQL Server Native Client Service
6752
SQLAgent$DB3 SQL Server Native Client Service
3996
msftesql Database Services Service
5920
SQLBrowser Database Services Service
2044
SQLWriter Microsoft SQL Server VSS Writer Service NT
AUTHORITY\SYSTEM 2116

**********************************************************************************
Product Installation Status
Product : Setup Support Files
Product Version (Previous): 3042
Product Version (Final) :
Status : Not Selected
Log File :
Error Description :
----------------------------------------------------------------------------------
Product : Database Services (DB3)
Product Version (Previous): 1399
Product Version (Final) :
Status : Not Selected
Log File :
Error Description :
----------------------------------------------------------------------------------
Product : Database Services (DB4)
Product Version (Previous): 1399
Product Version (Final) :
Status : Not Selected
Log File :
Error Description :
----------------------------------------------------------------------------------
Product : Database Services (MSSQLSERVER)
Product Version (Previous): 1399
Product Version (Final) :
Status : In Progress
Log File : C:\Program Files\Microsoft SQL Server\90\Setup
Bootstrap\LOG\Hotfix\SQL9_Hotfix_KB921896_sqlrun_sql.msp.log
Error Number : 29527

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