diff --git a/doc/versions.inc b/doc/versions.inc
index e82089d8d7..4f004602c2 100644
--- a/doc/versions.inc
+++ b/doc/versions.inc
@@ -318,9 +318,6 @@ $mac_changes_54= "
             Mac clients automatically request applications from the old 
             powerpc-apple-darwin platform when running on a PowerPC Mac, and 
             from the new i686-apple-darwin platform when running on an Intel Mac.
-        <li>As of 14 March 2006, only the upper_case alpha test project, the 
-            production SETI@home project and Einstein@home have applications 
-            for this platform.  
         <li> Upgrade warning: You may lose unreported results if you are upgrading 
             from a version of BOINC earlier than 5.4.0 on an Intel Mac, or if you are 
             transferring BOINC Data from a PowerPC Mac to an Intel Mac, or from an 
diff --git a/mac_build/English.lproj/InfoPlist.strings b/mac_build/English.lproj/InfoPlist.strings
index b12c406ca1..ce936d5e36 100755
--- a/mac_build/English.lproj/InfoPlist.strings
+++ b/mac_build/English.lproj/InfoPlist.strings
@@ -1,5 +1,5 @@
 /* Localized versions of Info.plist keys */
 
 CFBundleName = "BOINC";
-CFBundleShortVersionString = "BOINC version 5.7.0";
-CFBundleGetInfoString = "BOINC version 5.7.0, Copyright 2006 University of California.";
+CFBundleShortVersionString = "BOINC version 5.5.9";
+CFBundleGetInfoString = "BOINC version 5.5.9, Copyright 2006 University of California.";
diff --git a/mac_build/Info.plist b/mac_build/Info.plist
index abad6dd32e..3ef670a126 100644
--- a/mac_build/Info.plist
+++ b/mac_build/Info.plist
@@ -17,6 +17,6 @@
 	<key>CFBundleSignature</key>
 	<string>BNC!</string>
 	<key>CFBundleVersion</key>
-	<string>5.7.0</string>
+	<string>5.5.9</string>
 </dict>
 </plist>
diff --git a/mac_build/Installer-Info.plist b/mac_build/Installer-Info.plist
index f8d9e139e9..44192f087e 100644
--- a/mac_build/Installer-Info.plist
+++ b/mac_build/Installer-Info.plist
@@ -15,6 +15,6 @@
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>5.7.0</string>
+	<string>5.5.9</string>
 </dict>
 </plist>
diff --git a/mac_build/PostInstall-Info.plist b/mac_build/PostInstall-Info.plist
index a56550c05d..b00b11f1a1 100644
--- a/mac_build/PostInstall-Info.plist
+++ b/mac_build/PostInstall-Info.plist
@@ -15,6 +15,6 @@
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>5.7.0</string>
+	<string>5.5.9</string>
 </dict>
 </plist>
diff --git a/mac_build/ScreenSaver-Info.plist b/mac_build/ScreenSaver-Info.plist
index 670ca90f78..8dd2db4088 100644
--- a/mac_build/ScreenSaver-Info.plist
+++ b/mac_build/ScreenSaver-Info.plist
@@ -17,7 +17,7 @@
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>5.7.0</string>
+	<string>5.5.9</string>
 	<key>NSPrincipalClass</key>
 	<string>BOINC_Saver_ModuleView</string>
 </dict>
diff --git a/mac_build/SystemMenu-Info.plist b/mac_build/SystemMenu-Info.plist
index 6862e91a38..f159c80de6 100644
--- a/mac_build/SystemMenu-Info.plist
+++ b/mac_build/SystemMenu-Info.plist
@@ -15,6 +15,6 @@
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>5.7.0</string>
+	<string>5.5.9</string>
 </dict>
 </plist>
diff --git a/mac_installer/GR-ReadMe.rtf b/mac_installer/GR-ReadMe.rtf
index db4b43a35e..963383e7ff 100644
--- a/mac_installer/GR-ReadMe.rtf
+++ b/mac_installer/GR-ReadMe.rtf
@@ -1,4 +1,4 @@
-{\rtf1\mac\ansicpg10000\cocoartf824\cocoasubrtf390
+{\rtf1\mac\ansicpg10000\cocoartf824\cocoasubrtf410
 {\fonttbl\f0\fswiss\fcharset77 Helvetica-Bold;\f1\fswiss\fcharset77 Helvetica;\f2\fswiss\fcharset77 Helvetica-Oblique;
 }
 {\colortbl;\red255\green255\blue255;}
@@ -40,7 +40,7 @@ This is a
 \f0\b Setting GridRepublic as your screen saver:
 \f1\b0  Although this installer adds the GridRepublic screen saver to your system, it does not change your screen saver settings.  To select GridRepublic as your screen saver, use the Screen Saver or Screen Effects panel in the System Preferences (accessible from the Apple menu).  \
 \
-It may take a minute after the screen saver starts before the science application graphics appear.  At the time of this release, SETI@home and Einstein@home are the only GridRepublic projects which have implemented screen saver support for the Macintosh.  We expect other GridRepublic projects to do so soon.\
+It may take a minute after the screen saver starts before the science application graphics appear.  \
 \
 Note: on some versions of the Mac OS, you may not be able to exit the GridRepublic screen saver by moving the mouse; you may need to press the mouse button or press any key on the keyboard to exit.  \
 \
diff --git a/mac_installer/ReadMe.rtf b/mac_installer/ReadMe.rtf
index 5f9071e6f0..8eefeb593f 100644
--- a/mac_installer/ReadMe.rtf
+++ b/mac_installer/ReadMe.rtf
@@ -1,4 +1,4 @@
-{\rtf1\mac\ansicpg10000\cocoartf824\cocoasubrtf390
+{\rtf1\mac\ansicpg10000\cocoartf824\cocoasubrtf410
 {\fonttbl\f0\fswiss\fcharset77 Helvetica-Bold;\f1\fswiss\fcharset77 Helvetica;\f2\fswiss\fcharset77 Helvetica-Oblique;
 }
 {\colortbl;\red255\green255\blue255;}
@@ -40,7 +40,7 @@ This is a
 \f0\b Setting BOINC as your screen saver:
 \f1\b0  Although this installer adds the BOINC screen saver to your system, it does not change your screen saver settings.  To select BOINC as your screen saver, use the Screen Saver or Screen Effects panel in the System Preferences (accessible from the Apple menu).  \
 \
-It may take a minute after the screen saver starts before the science application graphics appear.  At the tim this is written, SETI@home and Einstein@home are the only BOINC projects which have implemented screen saver support for the Macintosh.  We expect other BOINC projects to do so soon.\
+It may take a minute after the screen saver starts before the science application graphics appear.  \
 \
 Note: on some versions of the Mac OS, you may not be able to exit the BOINC screen saver by moving the mouse; you may need to press the mouse button or press any key on the keyboard to exit.  \
 \