diff --git a/ext/async/sqlite3async.c b/ext/async/sqlite3async.c
index c2532b9c0d..5c52f5f652 100644
--- a/ext/async/sqlite3async.c
+++ b/ext/async/sqlite3async.c
@@ -10,7 +10,7 @@
 **
 *************************************************************************
 **
-** $Id: sqlite3async.c,v 1.4 2009/04/25 08:39:15 danielk1977 Exp $
+** $Id: sqlite3async.c,v 1.5 2009/04/29 18:12:00 shane Exp $
 **
 ** This file contains the implementation of an asynchronous IO backend 
 ** for SQLite.
@@ -19,7 +19,7 @@
 #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_ASYNCIO)
 
 #include "sqlite3async.h"
-#include "sqlite3.h"
+#include "sqliteInt.h"
 #include <stdarg.h>
 #include <string.h>
 #include <assert.h>
@@ -49,6 +49,8 @@ static void asyncTrace(const char *zFormat, ...){
   fprintf(stderr, "[%d] %s", 0 /* (int)pthread_self() */, z);
   sqlite3_free(z);
 }
+#else
+# define ASYNC_TRACE(X)
 #endif
 
 /*
@@ -301,6 +303,7 @@ static void async_cond_signal(int eCond){
 }
 static void async_sched_yield(void){
   /* Todo: Find out if win32 offers anything like sched_yield() */
+  Sleep(0);
 }
 #else
 
@@ -678,7 +681,7 @@ static int asyncRead(
     if( rc!=SQLITE_OK ){
       goto asyncread_out;
     }
-    nRead = MIN(filesize - iOffset, iAmt);
+    nRead = (int)MIN(filesize - iOffset, iAmt);
     if( nRead>0 ){
       rc = pBase->pMethods->xRead(pBase, zOut, nRead, iOffset);
       ASYNC_TRACE(("READ %s %d bytes at %d\n", p->zName, nRead, iOffset));
@@ -694,8 +697,8 @@ static int asyncRead(
         (pWrite->pFileData==p) ||
         (zName && pWrite->pFileData->zName==zName)
       )){
-        int iBeginOut = (pWrite->iOffset-iOffset);
-        int iBeginIn = -iBeginOut;
+        sqlite3_int64 iBeginOut = (pWrite->iOffset-iOffset);
+        sqlite3_int64 iBeginIn = -iBeginOut;
         int nCopy;
 
         if( iBeginIn<0 ) iBeginIn = 0;
@@ -901,6 +904,7 @@ static int asyncCheckReservedLock(sqlite3_file *pFile, int *pResOut){
   for(pIter=p->pLock->pList; pIter; pIter=pIter->pNext){
     if( pIter->eLock>=SQLITE_LOCK_RESERVED ){
       ret = 1;
+      break;
     }
   }
   async_mutex_leave(ASYNC_MUTEX_LOCK);
@@ -927,13 +931,15 @@ static int asyncFileControl(sqlite3_file *id, int op, void *pArg){
 
 /* 
 ** Return the device characteristics and sector-size of the device. It
-** is not tricky to implement these correctly, as this backend might 
+** is tricky to implement these correctly, as this backend might 
 ** not have an open file handle at this point.
 */
 static int asyncSectorSize(sqlite3_file *pFile){
+  UNUSED_PARAMETER(pFile);
   return 512;
 }
 static int asyncDeviceCharacteristics(sqlite3_file *pFile){
+  UNUSED_PARAMETER(pFile);
   return 0;
 }
 
@@ -1022,7 +1028,7 @@ static int asyncOpen(
 
   /* If zName is NULL, then the upper layer is requesting an anonymous file */
   if( zName ){
-    nName = strlen(zName)+1;
+    nName = (int)strlen(zName)+1;
   }
 
   nByte = (
@@ -1142,7 +1148,8 @@ static int asyncOpen(
 ** write-op queue to perform the delete.
 */
 static int asyncDelete(sqlite3_vfs *pAsyncVfs, const char *z, int syncDir){
-  return addNewAsyncWrite(0, ASYNC_DELETE, syncDir, strlen(z)+1, z);
+  UNUSED_PARAMETER(pAsyncVfs);
+  return addNewAsyncWrite(0, ASYNC_DELETE, syncDir, (int)strlen(z)+1, z);
 }
 
 /*
diff --git a/manifest b/manifest
index 8c93625b93..31d3420103 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Modify\sthe\sassemblePage()\sfunction\sin\sbtree.c\sso\sthat\sit\sruns\sslightly\sfaster.\s(CVS\s6569)
-D 2009-04-29T17:49:59
+C Fixed\scompile\sfor\sMSVC;\s\sremoved\scompiler\swarnings;\schanges\sfor\sNDEBUG\sbuild;\sminor\scode\stweaks.\s(CVS\s6570)
+D 2009-04-29T18:12:00
 F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
 F Makefile.in 583e87706abc3026960ed759aff6371faf84c211
 F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@@ -25,7 +25,7 @@ F doc/lemon.html f0f682f50210928c07e562621c3b7e8ab912a538
 F doc/report1.txt a031aaf37b185e4fa540223cb516d3bccec7eeac
 F ext/README.txt 913a7bd3f4837ab14d7e063304181787658b14e1
 F ext/async/README.txt 0c541f418b14b415212264cbaaf51c924ec62e5b
-F ext/async/sqlite3async.c 2e1048922c1d544f0d2a7c3533909e5d67f466f2
+F ext/async/sqlite3async.c 207af6692a52cf1dc3a9e64c93dcd7f7a7db0a6f
 F ext/async/sqlite3async.h b6d74dbf9aa5a0ac4e79aa15a4d987f3552a0f75
 F ext/fts1/README.txt 20ac73b006a70bcfd80069bdaf59214b6cf1db5e
 F ext/fts1/ft_hash.c 3927bd880e65329bdc6f506555b228b28924921b
@@ -725,7 +725,7 @@ F tool/speedtest16.c c8a9c793df96db7e4933f0852abb7a03d48f2e81
 F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
 F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
 F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
-P 58c7bdb21c719bf06713ff8ffa7ee51cf1973712
-R 9145a583971405864bb9bd62ca2de2c1
-U danielk1977
-Z d09c5a2c4f4e5bd4d6f77225050209bb
+P 7ec42e989f1d4abdc6d52f8feebf51985f36b2bd
+R 650f490b514ba52c11005770056d7df0
+U shane
+Z 14c530093810df3e24600cbed8dbd4c1
diff --git a/manifest.uuid b/manifest.uuid
index 6b956da55e..3c5f6f8541 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-7ec42e989f1d4abdc6d52f8feebf51985f36b2bd
\ No newline at end of file
+e98b12425ff036b36165dfd2002e0530ca27a677
\ No newline at end of file