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[reportXubuntu <802902@xxxxxxxxxxxxxxxxxx>]

Thanks Mike for quick answer. It is nice to find out that there is some
body alive in this bug :D

It was only in this example with that 
new  kernel (3.11.0-2-lowlatency #1-Ubuntu SMP PREEMPT Fri Aug 16 22:06:58 UTC 2013 i686) 
when  Netgear usb adapter give 100% lost,
with older kernel (3.8.0-30-lowlatency #22-Ubuntu SMP PREEMPT Mon Aug 26 22:31:40 UTC 2013 x86_64 x86_64 x86_64) adapter was working, but so so slugish like hell.... and average pakage lost was up til 50% or
60%, and sometimes up til 20%.
The router was just in average  10 m distance with the wooden wall.  So it is nothing to do with signal strenght
because another adapter with intel chip with all most the same signal quality gives 0% of pakage lost when pinging to router.
And a bit rate, i think, i set it it to auto  or something, but if i want i can set it up til to 54mb/s
with sudo iwconfig wlan1 rate 54M fixed but there is no point set rate to 54mb/s with internet speed i have .  It is the same like when your car 
can go on road max 200km/h and put 400km/h on speedometer. the car will not became faster just for that ;)

And on athe laptop with 13.04 ubuntustudio with 
kernel (3.8.0-30-lowlatency #22-Ubuntu SMP PREEMPT Mon Aug 26 22:31:40 UTC 2013 x86_64 x86_64 x86_64)
with setings
sudo iwconfig wlan1 rate 5.5M fixed 
sudo iwconfig wlan1 frag 2346
and laptop about 15m distance from router

pinging to router gives
ping 10.0.0.138
PING 10.0.0.138 (10.0.0.138) 56(84) bytes of data.
64 bytes from 10.0.0.138: icmp_req=9 ttl=64 time=1.67 ms
64 bytes from 10.0.0.138: icmp_req=10 ttl=64 time=3.45 ms
64 bytes from 10.0.0.138: icmp_req=12 ttl=64 time=2.04 ms
64 bytes from 10.0.0.138: icmp_req=13 ttl=64 time=2.60 ms
^C
--- 10.0.0.138 ping statistics ---
15 packets transmitted, 4 received, 73% packet loss, time 14005ms
rtt min/avg/max/mdev = 1.677/2.445/3.452/0.671 ms

and with sudo iwconfig wlan1 txpower 15

ping 10.0.0.138
PING 10.0.0.138 (10.0.0.138) 56(84) bytes of data.
64 bytes from 10.0.0.138: icmp_req=4 ttl=64 time=1.71 ms
64 bytes from 10.0.0.138: icmp_req=6 ttl=64 time=1.45 ms
64 bytes from 10.0.0.138: icmp_req=7 ttl=64 time=3.05 ms
64 bytes from 10.0.0.138: icmp_req=8 ttl=64 time=1.58 ms
64 bytes from 10.0.0.138: icmp_req=9 ttl=64 time=1.75 ms
64 bytes from 10.0.0.138: icmp_req=10 ttl=64 time=1.27 ms
^C
--- 10.0.0.138 ping statistics ---
10 packets transmitted, 6 received, 40% packet loss, time 9008ms
rtt min/avg/max/mdev = 1.273/1.805/3.054/0.582 ms


So i think it is the same or allmost the same like yours situation,
because with this % of packet lost i also shall get slow download speed.

Actualy adapter in 2012 up till august was working fine. Then router was changed
and i began to have connection problems with this adpter. I don't remember what kernel was at that momem in use.
Now i began to remember that maybe i made experiment with another router dlink some have year ago,
and adapter was pinging fine, but now can not verify it 100% if I remember it 100% exactly.

Mike what is router name that your adapter is connecting ?

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https://bugs.launchpad.net/bugs/802902

Title:
  Realtek rtl8187b wireless chipset slow speed

Status in The Linux Kernel:
  Invalid
Status in “linux” package in Ubuntu:
  Fix Released

Bug description:
  Hi, I have ubuntu 11.04, all updates, wifi chipset rtl8187B, kernel 2.6.38-10, and 14mbit/s internet connection. 
  When I try to download something, for example from torrents, I see ping up (up to 500-800ms), slow speed (<1mbit/s) and packets lost.
  In windows its works fine, ping didnt up, download speed 14mbit/s. 
  So if I want to download something, I need to reboot from ubuntu to windows, or wait for download at low speed in ubuntu. And it's not good=(
  Thanks, and sorry my bad english.

  laptop:~$ uname -a
  Linux mike-laptop 2.6.38-10-generic #44-Ubuntu SMP Thu Jun 2 21:32:22 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

  laptop:~$ modprobe --show-depends rtl8187
  insmod /lib/modules/2.6.38-10-generic/updates/drivers/misc/eeprom/eeprom_93cx6.ko
  insmod /lib/modules/2.6.38-10-generic/updates/net/wireless/cfg80211.ko
  insmod /lib/modules/2.6.38-10-generic/updates/net/mac80211/mac80211.ko
  insmod /lib/modules/2.6.38-10-generic/updates/drivers/net/wireless/rtl818x/rtl8187/rtl8187.ko

  laptop:~$ sudo lsusb -d 0bda:8187
  Bus 001 Device 004: ID 0bda:8187 Realtek Semiconductor Corp. RTL8187 Wireless Adapter

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: linux-image-2.6.38-10-generic 2.6.38-10.44
  ProcVersionSignature: Ubuntu 2.6.38-10.44-generic 2.6.38.7
  Uname: Linux 2.6.38-10-generic x86_64
  NonfreeKernelModules: nvidia
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  mike       2412 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xfcb00000 irq 43'
     Mixer name	: 'Realtek ALC269'
     Components	: 'HDA:10ec0269,144dc06a,00100004'
     Controls      : 13
     Simple ctrls  : 8
  Card1.Amixer.info:
   Card hw:1 'NVidia'/'HDA NVidia at 0xddefc000 irq 16'
     Mixer name	: 'Nvidia GPU 0b HDMI/DP'
     Components	: 'HDA:10de000b,10de0101,00100100'
     Controls      : 16
     Simple ctrls  : 4
  Date: Tue Jun 28 13:24:48 2011
  HibernationDevice: RESUME=UUID=339679fe-6015-48a0-b9f5-9bdecde05562
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110405)
  MachineType: SAMSUNG ELECTRONICS CO., LTD. R530/R730/P530
  ProcEnviron:
   LANGUAGE=ru_RU:en
   PATH=(custom, no user)
   LANG=ru_RU.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-10-generic root=UUID=eae27d1a-6cca-45bb-8c38-d8cdd238b079 ro quiet splash nomodeset video=uvesafb:mode_option=1377x768-24,mtrr=3,scroll=ywrap vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-2.6.38-10-generic N/A
   linux-backports-modules-2.6.38-10-generic  N/A
   linux-firmware                             1.52.1
  SourcePackage: linux
  UpgradeStatus: Upgraded to natty on 2011-05-04 (54 days ago)
  dmi.bios.date: 06/21/2010
  dmi.bios.vendor: Phoenix Technologies Ltd.
  dmi.bios.version: 04KQ.M007.20100621.KSJ
  dmi.board.asset.tag: Tag 12345
  dmi.board.name: R530/R730/P530
  dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.board.version: Not Applicable
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr04KQ.M007.20100621.KSJ:bd06/21/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnR530/R730/P530:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnR530/R730/P530:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A:
  dmi.product.name: R530/R730/P530
  dmi.product.version: Not Applicable
  dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.

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