diff --git a/iguana/iguana_recv.c b/iguana/iguana_recv.c
index 1fad0d9ec..1044241cc 100755
--- a/iguana/iguana_recv.c
+++ b/iguana/iguana_recv.c
@@ -636,7 +636,7 @@ struct iguana_bundle *iguana_bundleset(struct iguana_info *coin,struct iguana_bl
             iguana_bundlehash2add(coin,0,bp,bundlei,hash2);
             if ( bp->emitfinish == 0 )
             {
-                if ( 0 && bits256_nonz(block->RO.hash2) != 0 && block->fpipbits == 0 )
+                if ( bp->hdrsi == coin->longestchain/bp->n && bits256_nonz(block->RO.hash2) != 0 && block->fpipbits == 0 )
                 {
                     block->fpos = -1;
                     checki = iguana_peerfname(coin,&hdrsi,GLOBALTMPDIR,fname,0,block->RO.hash2,zero,1,0);
@@ -647,7 +647,7 @@ struct iguana_bundle *iguana_bundleset(struct iguana_info *coin,struct iguana_bl
                         block->fpipbits = 1;
                         block->txvalid = 1;
                         block->fpos = 0;
-                        //printf("initialize with fp.[%d:%d] len.%d\n",hdrsi,bundlei,block->RO.recvlen);
+                        printf("initialize with fp.[%d:%d] len.%d\n",hdrsi,bundlei,block->RO.recvlen);
                         fclose(fp);
                     }
                 } else iguana_blockQ("bundleset",coin,bp,bundlei,block->RO.hash2,coin->current == 0 || bp->hdrsi <= coin->current->hdrsi+coin->MAXBUNDLES);
diff --git a/iguana/iguana_unspents.c b/iguana/iguana_unspents.c
index 977625efe..9ec2dc2fd 100755
--- a/iguana/iguana_unspents.c
+++ b/iguana/iguana_unspents.c
@@ -724,7 +724,7 @@ int32_t iguana_spendvectors(struct iguana_info *coin,struct iguana_bundle *bp)
                             printf("unexpected spendbp: height.%d bp.[%d] U%d <- S%d.[%d] [ext.%d %s prev.%d]\n",bp->bundleheight+i,spentbp->hdrsi,spent_unspentind,spendind,bp->hdrsi,s->external,bits256_str(str,prevhash),s->prevout);
                             errs++;
                         }
-                        if ( now > spentbp->lastprefetch+300 )
+                        if ( 0 && now > spentbp->lastprefetch+300 )
                         {
                             printf("prefetch[%d] from.[%d] lag.%d\n",spentbp->hdrsi,bp->hdrsi,now - spentbp->lastprefetch);
                             iguana_ramchain_prefetch(coin,&spentbp->ramchain);
@@ -959,7 +959,7 @@ int32_t iguana_RTutxo(struct iguana_info *coin,struct iguana_bundle *bp,struct i
                 if ( (++num % 1000) == 0 )
                     printf("externalspents.[%d] ave %.2f micros, total %.2f seconds\n",num,(totalmillis*1000.)/num,totalmillis/1000.);
                 rdata = spentbp->ramchain.H.data;
-                if ( now > spentbp->lastprefetch+60 )
+                if ( 0 && now > spentbp->lastprefetch+60 )
                 {
                     printf("RT prefetch[%d] from.[%d] lag.%d\n",spentbp->hdrsi,bp->hdrsi,now - spentbp->lastprefetch);
                     iguana_ramchain_prefetch(coin,&spentbp->ramchain);