diff --git a/checkin_notes b/checkin_notes
index 2ade362ec7..e1d2b7bb79 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -2001,3 +2001,12 @@ Charlie  18 Mar 2010
         BOINCGUIApp.cpp
     lib/
         gui_rpc_client_ops.cpp
+
+David  18 Mar 2010
+	- client (and anything else using MFILE): Win efficiency fix.
+		Shockingly, realloc() wasn't doing exponential growth.
+		So create realloc_aux() that does.
+
+	lib/
+		mfile.cpp
+		gui_rpc_client_ops.cpp
diff --git a/lib/gui_rpc_client_ops.cpp b/lib/gui_rpc_client_ops.cpp
index a8a250948e..03dbf46eab 100644
--- a/lib/gui_rpc_client_ops.cpp
+++ b/lib/gui_rpc_client_ops.cpp
@@ -767,7 +767,7 @@ WORKUNIT* CC_STATE::lookup_wu(PROJECT* project, char* name) {
     unsigned int i;
     for (i=0; i<wus.size(); i++) {
         if (wus[i]->project != project) continue;
-        if (strcmp(wus[i]->name, name)) return wus[i];
+        if (!strcmp(wus[i]->name, name)) return wus[i];
     }
     return 0;
 }
@@ -776,7 +776,7 @@ RESULT* CC_STATE::lookup_result(PROJECT* project, char* name) {
     unsigned int i;
     for (i=0; i<results.size(); i++) {
         if (results[i]->project != project) continue;
-        if (strcmp(results[i]->name, name)) return results[i];
+        if (!strcmp(results[i]->name, name)) return results[i];
     }
     return 0;
 }
diff --git a/lib/mfile.cpp b/lib/mfile.cpp
index 360b13d1fd..d6fed85187 100644
--- a/lib/mfile.cpp
+++ b/lib/mfile.cpp
@@ -40,7 +40,7 @@
 
 
 MFILE::MFILE() {
-    buf = 0;
+    buf = (char*)malloc(64*1024);
     len = 0;
 }
 
@@ -54,6 +54,13 @@ int MFILE::open(const char* path, const char* mode) {
     return 0;
 }
 
+// seems like Win's realloc is stupid,  Make it smart.
+//
+static inline char* realloc_aux(char* p, int len) {
+    if (_msize(p) >= len) return p;
+    return (char*) realloc(p, len*2);
+}
+
 #define BUFSIZE 100000
 
 int MFILE::vprintf(const char* format, va_list ap) {
@@ -68,7 +75,7 @@ int MFILE::vprintf(const char* format, va_list ap) {
         return -1;
     }
     n = (int)strlen(buf2);
-    buf = (char*)realloc(buf, len+n+1);
+    buf = (char*)realloc_aux(buf, len+n+1);
     if (!buf) {
         fprintf(stderr, "ERROR: realloc() failed in MFILE::vprintf()\n");
         exit(1);
@@ -90,7 +97,7 @@ int MFILE::printf(const char* format, ...) {
 }
 
 size_t MFILE::write(const void *ptr, size_t size, size_t nitems) {
-    buf = (char *)realloc( buf, len+(size*nitems)+1 );
+    buf = (char *)realloc_aux( buf, len+(size*nitems)+1 );
     if (!buf) {
         fprintf(stderr, "ERROR: realloc() failed in MFILE::write()\n");
         exit(1);
@@ -102,7 +109,7 @@ size_t MFILE::write(const void *ptr, size_t size, size_t nitems) {
 }
 
 int MFILE::_putchar(char c) {
-    buf = (char*)realloc(buf, len+1+1);
+    buf = (char*)realloc_aux(buf, len+1+1);
     if (!buf) {
         fprintf(stderr, "ERROR: realloc() failed in MFILE::_putchar()\n");
         exit(1);
@@ -115,7 +122,7 @@ int MFILE::_putchar(char c) {
 
 int MFILE::puts(const char* p) {
     int n = (int)strlen(p);
-    buf = (char*)realloc(buf, len+n+1);
+    buf = (char*)realloc_aux(buf, len+n+1);
     if (!buf) {
         fprintf(stderr, "ERROR: realloc() failed in MFILE::puts()\n");
         exit(1);