diff --git a/jstests/capped2.js b/jstests/capped2.js
index a9b209efa8f..3a48eedba2b 100644
--- a/jstests/capped2.js
+++ b/jstests/capped2.js
@@ -1,6 +1,10 @@
 db.capped2.drop();
 db._dbCommand( { create: "capped2", capped: true, size: 1000, $nExtents: 11, autoIndexId: false } );
-t = db.capped2;
+tzz = db.capped2;
+
+function debug( x ) {
+//    print( x );
+}
 
 var val = new Array( 2000 );
 var c = "";
@@ -9,43 +13,45 @@ for( i = 0; i < 2000; ++i, c += "-" ) {
 }
 
 function checkIncreasing( i ) {
-    res = t.find().sort( { $natural: -1 } );
-    assert( res.hasNext() );
+    res = tzz.find().sort( { $natural: -1 } );
+    assert( res.hasNext(), "A" );
     var j = i;
     while( res.hasNext() ) {
-      	assert.eq( val[ j-- ].a, res.next().a );
+      	assert.eq( val[ j-- ].a, res.next().a, "B" );
     }
-    res = t.find().sort( { $natural: 1 } );
-    assert( res.hasNext() );
+    res = tzz.find().sort( { $natural: 1 } );
+    assert( res.hasNext(), "C" );
     while( res.hasNext() )
-	assert.eq( val[ ++j ].a, res.next().a );
-    assert.eq( j, i );
+	assert.eq( val[ ++j ].a, res.next().a, "D" );
+    assert.eq( j, i, "E" );
 }
 
 function checkDecreasing( i ) {
-    res = t.find().sort( { $natural: -1 } );
-    assert( res.hasNext() );
+    res = tzz.find().sort( { $natural: -1 } );
+    assert( res.hasNext(), "F" );
     var j = i;
     while( res.hasNext() ) {
-      	assert.eq( val[ j++ ].a, res.next().a );
+      	assert.eq( val[ j++ ].a, res.next().a, "G" );
     }
-    res = t.find().sort( { $natural: 1 } );
-    assert( res.hasNext() );
+    res = tzz.find().sort( { $natural: 1 } );
+    assert( res.hasNext(), "H" );
     while( res.hasNext() )
-	assert.eq( val[ --j ].a, res.next().a );
-    assert.eq( j, i );
+	assert.eq( val[ --j ].a, res.next().a, "I" );
+    assert.eq( j, i, "J" );
 }
 
 for( i = 0 ;; ++i ) {
-    t.save( val[ i ] );
-    if ( t.count() == 0 ) {
-	assert( i > 100 );
+    debug( "capped 2: " + i );
+    tzz.save( val[ i ] );
+    if ( tzz.count() == 0 ) {
+	assert( i > 100, "K" );
 	break;
     }
     checkIncreasing( i );
 }
 
 for( i = 600 ; i >= 0 ; --i ) {
-    t.save( val[ i ] );
+    debug( "capped 2: " + i );
+    tzz.save( val[ i ] );
     checkDecreasing( i );
 }
diff --git a/jstests/capped4.js b/jstests/capped4.js
index 71fe5f0c05f..14d5bd00521 100644
--- a/jstests/capped4.js
+++ b/jstests/capped4.js
@@ -13,16 +13,16 @@ d = t.find().sort( { i: -1 } ).limit( 2 );
 d.next();
 d.next();
 
-for( i = 20; i < 40; ++i ) {
+for( i = 20; t.findOne( { i:19 } ); ++i ) {
     t.save( { i : i } );
 }
-assert( !t.findOne( { i : 19 } ) );
-assert( !c.hasNext() );
-assert( !d.hasNext() );
-assert( t.find().sort( { i : 1 } ).hint( { i : 1 } ).toArray().length > 10 );
+//assert( !t.findOne( { i : 19 } ), "A" );
+assert( !c.hasNext(), "B" );
+assert( !d.hasNext(), "C" );
+assert( t.find().sort( { i : 1 } ).hint( { i : 1 } ).toArray().length > 10, "D" );
 
-assert( t.findOne( { i : 38 } ) );
-t.remove( { i : 38 } );
-assert( db.getLastError().indexOf( "capped" ) >= 0 );
+assert( t.findOne( { i : i - 1 } ), "E" );
+t.remove( { i : i - 1 } );
+assert( db.getLastError().indexOf( "capped" ) >= 0, "F" );
 
-assert( t.validate().valid );
+assert( t.validate().valid, "G" );