diff -urp john-1.7.6-sha256cuda-1/src/cuda/sha256.cu john-1.7.6-sha256cuda-1mod/src/cuda/sha256.cu
--- john-1.7.6-sha256cuda-1/src/cuda/sha256.cu	2011-04-11 19:37:33.000000000 +0000
+++ john-1.7.6-sha256cuda-1mod/src/cuda/sha256.cu	2011-04-11 21:42:30.000000000 +0000
@@ -90,7 +90,9 @@ __global__ void kernel_sha256(sha256_pas
    h=g;g=f;f=e;e=d+t1;d=c;c=b;b=a;a=t1+t2;
   }
   out->v[0]=a+_h[0];out->v[1]=b+_h[1];
+/*
   out->v[2]=c+_h[2];out->v[3]=d+_h[3];
   out->v[4]=e+_h[4];out->v[5]=f+_h[5];
   out->v[6]=g+_h[6];out->v[7]=h+_h[7];
+*/
 }
diff -urp john-1.7.6-sha256cuda-1/src/Makefile john-1.7.6-sha256cuda-1mod/src/Makefile
--- john-1.7.6-sha256cuda-1/src/Makefile	2011-04-11 23:03:42.000000000 +0000
+++ john-1.7.6-sha256cuda-1mod/src/Makefile	2011-04-11 21:38:41.000000000 +0000
@@ -21,7 +21,8 @@ OMPFLAGS =
 #OMPFLAGS = -xopenmp
 NVCCFLAGS = -c --maxrregcount 14 -Xptxas -v
 CUDAPATH = /usr/local/cuda/lib
-CUDA64PATH = /usr/local/cuda/lib64
+#CUDA64PATH = /usr/local/cuda/lib64
+CUDA64PATH = /usr/lib64/cuda32
 CUDALIB=$(CUDAPATH)
 CFLAGS = -c -Wall -O2 -fomit-frame-pointer  $(OMPFLAGS)
 ASFLAGS = -c $(OMPFLAGS)
diff -urp john-1.7.6-sha256cuda-1/src/sha256cuda_fmt.c john-1.7.6-sha256cuda-1mod/src/sha256cuda_fmt.c
--- john-1.7.6-sha256cuda-1/src/sha256cuda_fmt.c	2011-04-11 19:40:51.000000000 +0000
+++ john-1.7.6-sha256cuda-1mod/src/sha256cuda_fmt.c	2011-04-11 21:43:07.000000000 +0000
@@ -167,7 +167,7 @@ static int cmp_all(void *binary,int coun
 static int cmp_one(void *binary,int index){
   int i;
   uint32_t *t=(uint32_t *)binary;
-  for(i=0;i<8;i++)
+  for(i=0;i<2;i++)
     if(t[i]!=outbuffer[index].v[i])
       return 0;
   return 1;
diff -urp john-1.7.6-sha256cuda-1/src/sha256.h john-1.7.6-sha256cuda-1mod/src/sha256.h
--- john-1.7.6-sha256cuda-1/src/sha256.h	2011-04-11 19:08:31.000000000 +0000
+++ john-1.7.6-sha256cuda-1mod/src/sha256.h	2011-04-11 21:47:05.000000000 +0000
@@ -16,7 +16,8 @@
 
 //#define KEYS_PER_CRYPT 65536			///256 blocks * 256 threads todo - auto detection
 #define THREADS 128
-#define BLOCKS 4096
+//#define BLOCKS 4096
+#define BLOCKS 16384
 #define KEYS_PER_CRYPT THREADS*BLOCKS
 
 typedef struct{
@@ -24,7 +25,7 @@ typedef struct{
 }sha256_password;
 
 typedef struct{
-  uint32_t v[8]; 				///256bit
+  uint32_t v[2]; 				///64-bit
 }sha256_hash;
 
 const uint32_t host_h[]={