I have a problem with my internet bandwidth on WiFi. Currently I have two computers: one with ubuntu 14.04 and second with Windows7.
On my Ubuntu machine when I try to download something I always have transfer about 400-500KB/s, but on my Windows7 machine I can download with transfer 2-3MB.
On Ubuntu machine I disabled Ipv6, but still nothing.

enter code hereeth0      no wireless extensions.



lo        no wireless extensions.



wlan0     IEEE 802.11abgn  ESSID:"UPC781972"  

          Mode:Managed  Frequency:2.437 GHz  Access Point: CC:35:40:76:D4:52   

          Bit Rate=130 Mb/s   Tx-Power=22 dBm   

          Retry  long limit:7   RTS thr:off   Fragment thr:off

          Power Management:off

          Link Quality=54/70  Signal level=-56 dBm  

          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0

          Tx excessive retries:5  Invalid misc:255   Missed beacon:0

I have read so far few tips about impoving network connection on 'AskUbuntu', but my WiFi works still in the same way. Does someone came on the same problem and solve it?

sudo lshw -C network

  *-network               

       description: Wireless interface

       product: Wireless 7260

       vendor: Intel Corporation

       physical id: 0

       bus info: pci@0000:02:00.0

       logical name: wlan0

       version: 73

       serial: XX:XX:XX:XX:XX:XX

       width: 64 bits

       clock: 33MHz

       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless

       configuration: broadcast=yes driver=iwlwifi driverversion=3.13.0-43-generic firmware=22.24.8.0 ip=192.168.0.14 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn

       resources: irq:61 memory:e3500000-e3501fff