diff --git a/debian/changelog b/debian/changelog
index c9df66b4..f273eadc 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -14,6 +14,8 @@ byobu (5.3) unreleased; urgency=low
     - use READLINK
   * usr/share/byobu/profiles/tmux:
     - add some comments
+  * usr/lib/byobu/ec2_cost, usr/lib/byobu/network: LP: #914098
+    - fix regression from r1839, add colon to IFS
 
  -- Dustin Kirkland <kirkland@ubuntu.com>  Sun, 08 Jan 2012 20:28:08 -0600
 
diff --git a/usr/lib/byobu/ec2_cost b/usr/lib/byobu/ec2_cost
index b14a53c2..0ea18d1d 100755
--- a/usr/lib/byobu/ec2_cost
+++ b/usr/lib/byobu/ec2_cost
@@ -33,6 +33,7 @@ __ec2_cost_detail() {
 
 __ec2_cost() {
 	local zone type file_to_stat cpu mem rate hours tx_gb rx_gb network_cost uptime_cost total_cost interface cache="$BYOBU_RUN_DIR/cache.$BYOBU_BACKEND/ec2_cost"
+	OIFS="$IFS"
 	# Try to use metadata service
 	if metadata_available; then
 		[ -s "$cache.zone" ] || wget -q -O "$cache.zone" http://169.254.169.254/latest/meta-data/placement/availability-zone 2>/dev/null &
@@ -75,13 +76,15 @@ __ec2_cost() {
 	# Auto detect network interface
 	interface=`tail -n1 /proc/net/route  | awk '{print $1}'`
 	local iface rbytes rpackets rerrs rdrop rfifo rframe rcompressed rmulticast tbytes tpackets terrs tdrop tfifo tcolls tcarrier tcompressed
+	IFS="$OIFS:"
 	while read iface rbytes rpackets rerrs rdrop rfifo rframe rcompressed rmulticast tbytes tpackets terrs tdrop tfifo tcolls tcarrier tcompressed; do
-		if [ "$iface" = "${interface}:" ]; then                 
+		if [ "$iface" = "${interface}:" ]; then
 			tx_gb=${tbytes}
 			rx_gb=${rbytes}
-			break;                                         
-		fi                                                     
+			break
+		fi
 	done < /proc/net/dev
+	IFS="$OIFS"
 	tx_gb=$(echo ${tx_gb} | awk '{ printf "%f", $1 / 1024 / 1024 / 1024 }')
 	rx_gb=$(echo ${rx_gb} | awk '{ printf "%f", $1 / 1024 / 1024 / 1024 }')
 	network_cost=`echo "$tx_gb" "$TX_RATE" "$rx_gb" "$RX_RATE" | awk '{printf "%f %f", $1*$2, $3*$4}' | awk '{printf "%f", $1 + $2}'`
diff --git a/usr/lib/byobu/network b/usr/lib/byobu/network
index 5655a7d6..1910d5a4 100755
--- a/usr/lib/byobu/network
+++ b/usr/lib/byobu/network
@@ -42,12 +42,14 @@ __network() {
 		cache="$BYOBU_RUN_DIR/cache.$BYOBU_BACKEND/network.$i"
 		[ -r "$cache" ] && read x1 < "$cache" || tx1=0
 		local iface rbytes rpackets rerrs rdrop rfifo rframe rcompressed rmulticast tbytes tpackets terrs tdrop tfifo tcolls tcarrier tcompressed
+		IFS="$OIFS:"
 		while read iface rbytes rpackets rerrs rdrop rfifo rframe rcompressed rmulticast tbytes tpackets terrs tdrop tfifo tcolls tcarrier tcompressed; do
 			if [ "$iface" = "${interface}:" ]; then
 				[ "$i" = "up" ] && x2=${tbytes} || x2=${rbytes}
 				break;
 			fi
 		done < /proc/net/dev
+		IFS="$OIFS"
 		echo "$x2" > "$cache"
 		rate=$((8*($x2 - $x1) / $t / 1024))  # in kbps
 		[ "$rate" -lt 0 ] && rate=0