Java Plugin Won't Run!!! HELP!!!!

I installed 1.4 and it wouldn't run any of swing applets, so I uninstalled it, now I get
Java Plug-in 1.4 Fatal Error
Java Plug-in 1.3.1_01 cannot be located because values in the registry key
HKEY_LOCAL_MACHINE/SOFTWARE/JavaSoft/Java Plug-in/1.3.1_01 is not found or is no longer valid.
I have uninstalled ALL versions of the runtime and sdk and installed the 1.3.1_03. I STILL get the same error. I have searched through the registry and can not find any references to the 1.4. WHERE IS IT GETTING THAT, and how in the @*%& do I fix my machine!!!
HELP!!!!!
please email me at [email protected]

This problem afflicted Firefox for me. I have JDK 1.3.1, J2SDK 1.4.2 and JDK 1.5.0 installed on my machine.
I had recently installed the Oracle Enterprise Manager Console, and the issue started up after that install (thank you Oracle for adding your JRE references to the beginning of my Path Environment Variable).
As recommended by the previous two responses, I removed the Oracle JRE entry (C:\Program Files\Oracle\jre\1.3.1\bin) from my Path Environment Variable and the problem has gone away (I also removed the C:\Program Files\Oracle\jre\1.1.8\bin entry for sanity's sake).
I add this reply at this late date so that Googling the issue will also reference Firefox, since all previous articles that I've found only reference IE.

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<pre><nowiki>Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\@adobe.com/FlashPlayer]
"Path"="C:\\windows\\system32\\Macromed\\Flash\\NPSWF64_11_1_102.dll"
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=O====== M/11.1.102.55 2012-03-01+19-56-54.721 ========
0000 [I] 00000010 C:\DELL\CT097\installAX_64bit.exe -install
0001 [W] 00001036 Software\Macromedia\FlashPlayer\SafeVersions/11.0 2
0002 [W] 00001036 Software\Macromedia\FlashPlayerActiveX/PlayerPath 2
0003 [I] 00000020 C:\Windows\SysWOW64\FlashPlayerCPLApp.cpl
0004 [W] 00001037 SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Adobe Flash Player ActiveX/ 2
0005 [I] 00000013 C:\Windows\system32\Macromed\Flash\Flash64_11_1_102.ocx
0006 [I] 00000015 C:\Windows\system32\Macromed\Flash\FlashUtil64_11_1_102_ActiveX.exe
0007 [I] 00000016 C:\Windows\system32\Macromed\Flash\FlashUtil64_11_1_102_ActiveX.dll
0008 [I] 00000019 C:\Windows\SysWOW64\FlashPlayerCPLApp.cpl
0009 [I] 00000011 1
=X====== M/11.1.102.55 2012-03-01+19-56-57.763 ========
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0000 [I] 00000010 "C:\Users\Andy\AppData\Local\Temp\install_flash_player_64bit.exe" -dlm -install
0001 [F] 00001041
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0001 [I] 00000020 C:\windows\SysWOW64\FlashPlayerCPLApp.cpl
0002 [W] 00001036 Software\Opera Software/Last CommandLine 2
0003 [W] 00001036 Software\Opera Software/Last CommandLine 2
0004 [W] 00001036 Software\Opera Software/Plugin Path 2
0005 [W] 00001036 Software\Opera Software/Plugin Path 2
0006 [I] 00000014 C:\windows\system32\Macromed\Flash\NPSWF64_11_1_102.dll
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0008 [I] 00000015 C:\windows\system32\Macromed\Flash\FlashUtil64_11_1_102_Plugin.exe
0009 [I] 00000019 C:\windows\SysWOW64\FlashPlayerCPLApp.cpl
0010 [I] 00000011 1
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