diff --git a/iguana/dpow/dpow_fsm.c b/iguana/dpow/dpow_fsm.c
index 2f4b02007..712640f8c 100755
--- a/iguana/dpow/dpow_fsm.c
+++ b/iguana/dpow/dpow_fsm.c
@@ -643,7 +643,7 @@ void dpow_statemachinestart(void *ptr)
     //printf("done utxosync start.%u %u\n",starttime,(uint32_t)time(NULL));
     while ( time(NULL) < starttime+bp->duration && src != 0 && dest != 0 && bp->state != 0xffffffff )
     {
-        sleep(3);
+        sleep(1);
         if ( dp->checkpoint.blockhash.height > checkpoint.blockhash.height )
         {
             if ( bp->isratify == 0 )
diff --git a/iguana/dpow/dpow_network.c b/iguana/dpow/dpow_network.c
index 43e81cdde..1b826dfd6 100755
--- a/iguana/dpow/dpow_network.c
+++ b/iguana/dpow/dpow_network.c
@@ -290,7 +290,8 @@ void dpow_notarize_update(struct supernet_info *myinfo,struct dpow_info *dp,stru
                 }
             }
         }
-        printf("ips.%d NOTARIZE.%d matches.%d bestmatches.%d bestk.%d %llx recv.%llx sigmasks.(%llx %llx) senderind.%d\n",dp->numipbits,bp->minsigs,matches,bestmatches,bp->bestk,(long long)bp->bestmask,(long long)bp->recvmask,(long long)(bp->bestk>=0?bp->destsigsmasks[bp->bestk]:0),(long long)(bp->bestk>=0?bp->srcsigsmasks[bp->bestk]:0),senderind);
+        if ( (rand() % 100) == 0 )
+            printf("ips.%d NOTARIZE.%d matches.%d bestmatches.%d bestk.%d %llx recv.%llx sigmasks.(%llx %llx) senderind.%d\n",dp->numipbits,bp->minsigs,matches,bestmatches,bp->bestk,(long long)bp->bestmask,(long long)bp->recvmask,(long long)(bp->bestk>=0?bp->destsigsmasks[bp->bestk]:0),(long long)(bp->bestk>=0?bp->srcsigsmasks[bp->bestk]:0),senderind);
     }
 }
 
diff --git a/iguana/dpow/dpow_tx.c b/iguana/dpow/dpow_tx.c
index b277c6755..e6fe2d388 100755
--- a/iguana/dpow/dpow_tx.c
+++ b/iguana/dpow/dpow_tx.c
@@ -255,7 +255,10 @@ bits256 dpow_notarytx(char *signedtx,int32_t *numsigsp,int32_t isPoS,struct dpow
                 ep = &bp->notaries[k];
                 cp = (src_or_dest != 0) ? &bp->notaries[k].dest : &bp->notaries[k].src;
                 if ( bits256_nonz(cp->prev_hash) == 0 )
-                    return(cp->prev_hash);
+                {
+                    printf("null prevhash k.%d j.%d src_or_dest.%d\n",k,j,src_or_dest);
+                    return(zero);
+                }
                 len += iguana_rwbignum(1,&serialized[len],sizeof(cp->prev_hash),cp->prev_hash.bytes);
                 len += iguana_rwnum(1,&serialized[len],sizeof(cp->prev_vout),&cp->prev_vout);
                 siglen = cp->siglens[bestk];
@@ -287,7 +290,10 @@ bits256 dpow_notarytx(char *signedtx,int32_t *numsigsp,int32_t isPoS,struct dpow
     else
     {
         if ( (n= dpow_voutstandard(bp,&serialized[len],m,src_or_dest)) < 0 )
+        {
+            printf("error dpow_voutstandard\n");
             return(zero);
+        }
         len += n;
     }
     init_hexbytes_noT(signedtx,serialized,len);