diff --git a/html/user/sample_index.php b/html/user/sample_index.php
index 1823428dd8..2bbe0402ac 100644
--- a/html/user/sample_index.php
+++ b/html/user/sample_index.php
@@ -22,7 +22,6 @@
 // my developing your own stylesheet
 // and customizing the header/footer functions in html/project/project.inc
 
-require_once("../inc/db.inc");
 require_once("../inc/util.inc");
 require_once("../inc/news.inc");
 require_once("../inc/cache.inc");
@@ -182,7 +181,6 @@ if ($stopped) {
         Please try again later</b>.
     ";
 } else {
-    db_init();
     show_nav();
 }
 
diff --git a/html/user/server_status.php b/html/user/server_status.php
index 96723c5880..4c58d2cc14 100644
--- a/html/user/server_status.php
+++ b/html/user/server_status.php
@@ -317,8 +317,7 @@ if ($xml) {
     ";
 }
 
-$retval = db_init_aux();
-if ($retval) {
+if (BoincDB::get_aux(true) == null) {
     echo tra("The database server is not accessible");
 } else {
     if (!$xml) {
@@ -369,7 +368,6 @@ if ($retval) {
     $gap = unserialize(get_cached_data(STATUS_PAGE_TTL, "transitioner_backlog"));
     if ($gap === false) {
         $min = BoincDB::get()->lookup_fields("workunit", "stdClass", "MIN(transition_time) as min", "TRUE");
-        //$gap = BoincDB::get()->min("workunit", "transition_time"); $gap = time()-$gap/3600;
         $gap = (time() - $min->min)/3600;
         if (($gap < 0) || ($min->min == 0)) {
             $gap = 0;
diff --git a/mac_installer/Installer.cpp b/mac_installer/Installer.cpp
index 5d72f6f600..9d5477b1e8 100644
--- a/mac_installer/Installer.cpp
+++ b/mac_installer/Installer.cpp
@@ -109,9 +109,12 @@ int main(int argc, char *argv[])
     // Expand the installer package
     system("rm -dfR /tmp/BOINC.pkg");
     system("rm -dfR /tmp/expanded_BOINC.pkg");
-    sprintf(temp, "pkgutil --expand \"%s\" /tmp/expanded_BOINC.pkg", pkgPath);
-    err = system(temp);
-
+    
+    if (compareOSVersionTo(10, 9) < 0) {
+        sprintf(temp, "pkgutil --expand \"%s\" /tmp/expanded_BOINC.pkg", pkgPath);
+        err = system(temp);
+    }
+    
     if (err == noErr) {
         GetPreferredLanguages();
     }
@@ -201,6 +204,10 @@ Boolean IsRestartNeeded()
     uid_t           boinc_master_uid = 0, boinc_project_uid = 0;
     char            loginName[256];
     
+    if (compareOSVersionTo(10, 9) >= 0) {
+        return false;
+    }
+    
     grp = getgrnam(boinc_master_group_name);
     if (grp == NULL)
         return true;       // Group boinc_master does not exist