Firefox browser in Debian. 
Speed is 670kbps
 How do you connect your laptop to the internet? Is it a cable or wifi? What NIC are you using?
Laptop connects to the internet using wifi.
NIC - are you referring to this?
result of inxi -b :
  Device-1: Broadcom Limited BCM4313 802.11bgn Wireless Network Adapter 
  driver: bcma-pci-bridge
  Device-2: Marvell 88E8040 PCI-E Fast Ethernet driver: sky2