diff --git a/A2OSX.BOOT.po b/A2OSX.BOOT.po
index f3e78acd..28574cbf 100644
Binary files a/A2OSX.BOOT.po and b/A2OSX.BOOT.po differ
diff --git a/A2OSX.SRC.po b/A2OSX.SRC.po
index 827e1fe6..cda5b788 100644
Binary files a/A2OSX.SRC.po and b/A2OSX.SRC.po differ
diff --git a/LIB/LIBTCPIP.S.SKT.txt b/LIB/LIBTCPIP.S.SKT.txt
index 1a80d528..74c35d27 100644
--- a/LIB/LIBTCPIP.S.SKT.txt
+++ b/LIB/LIBTCPIP.S.SKT.txt
@@ -729,7 +729,7 @@ SKT.AddDataToSktIn
 				bcc .80
 				inc SKT.TCBCache+S.TCB.LASTSEQ+1
 				bne .80
-				inc SKT.TCBCache+S.TCB.NEXTSEQ
+				inc SKT.TCBCache+S.TCB.LASTSEQ
 
 .80				jmp SKT.StoreTCB
 *--------------------------------------
@@ -896,7 +896,6 @@ SKT.GetDataFromSktIn
 *--------------------------------------
 SKT.AddDataToSktOut
 				jsr SKT.GetTCB 
-				
 				ldx SKT.TCBCache+S.TCB.OUTFREE
 				cpx ZPDataInLen
 				lda SKT.TCBCache+S.TCB.OUTFREE+1
@@ -1056,13 +1055,13 @@ SKT.AckDataToSktOut
 				ldx #3					Substract old ACK from socket
 
 				sec
-				
+
 .1				lda (ZPFrameInPtr),y
 				pha
-				sbc SKT.TCBCache+S.TCB.ACKNUM,x
+				sbc SKT.TCBCache+S.TCB.SEQNUM,x
 				sta TmpDWord,x
 				pla						....and Set ACK = new ACK
-				sta SKT.TCBCache+S.TCB.ACKNUM,x
+				sta SKT.TCBCache+S.TCB.SEQNUM,x
 				dey
 				dex
 				bpl .1
diff --git a/LIB/LIBTCPIP.S.TCP.txt b/LIB/LIBTCPIP.S.TCP.txt
index 09a91556..604b7f35 100644
--- a/LIB/LIBTCPIP.S.TCP.txt
+++ b/LIB/LIBTCPIP.S.TCP.txt
@@ -431,7 +431,7 @@ TCP.OUT.Send	ldy #S.TCP.OPTIONS
 				ldx #7
 				ldy #S.TCP.SEQ.NUMBER+7
 				
-.2				lda SKT.TCBCache+S.TCB.SEQNUM,x
+.2				lda SKT.TCBCache+S.TCB.NEXTSEQ,x
 				sta (ZPFrameOutPtr),y
 				dey
 				dex