Wifi gets disconnected on random

[Joseph]

Wifi disconnection on random without any firewall installed.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: network-manager 0.9.8.8-0ubuntu27
ProcVersionSignature: Ubuntu 3.16.0-18.25-generic 3.16.3
Uname: Linux 3.16.0-18-generic i686
ApportVersion: 2.14.7-0ubuntu2
Architecture: i386
CurrentDesktop: XFCE
Date: Wed Oct 1 07:20:46 2014
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2014-09-26 (4 days ago)
InstallationMedia: Xubuntu 14.10 "Utopic Unicorn" - Alpha i386 (20140923)
IpRoute:
 default via 192.168.1.1 dev wlan0 proto static
 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.4 metric 9
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-con:
 NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY DBUS-PATH
 Wired connection 1 2a3ca823-07e8-4b9d-9f8f-19361abaca2b 802-3-ethernet 1412115299 Wed 01 Oct 2014 01:14:59 AM AST yes no /org/freedesktop/NetworkManager/Settings/1
 Zain Broadband 4G 1f3af6ec-07d7-4539-a1ca-8dc6f6ad0f45 802-11-wireless 1412137197 Wed 01 Oct 2014 07:19:57 AM AST yes no /org/freedesktop/NetworkManager/Settings/0
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH
 eth0 802-3-ethernet unavailable /org/freedesktop/NetworkManager/Devices/1
 wlan0 802-11-wireless connected /org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
 RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN
 running 0.9.8.8 connected enabled enabled enabled enabled disabled