Comment 50 for bug 24776

I can confirm this bug for T41 with Ubuntu 8.04 LTS, since about one week.

The wlan is open and router is an arcor-easy-box a800. The second laptop with ipw2200 works fine. Since about one week the connection is often dropped, but most times I can reestablish it, but often for a few minutes only - then the connection is dropped again.
The distance to the box is a few meters only. The neighborhood is covered with foreign WLANs (all of them wpa2-secured).
But this isn't new and the problems didn't exist for the two months before. (before that, I didn't used wlan, but classic eth).

sudo iwconfig
eth1 IEEE 802.11b ESSID:"pinguin3x2r" Nickname:"ipw2100"
          Mode:Managed Frequency:2.452 GHz Access Point: 00:1A:2A:C8:0E:3E
          Bit Rate=11 Mb/s Tx-Power:16 dBm
          Retry short limit:7 RTS thr:off Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=99/100 Signal level=-36 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:190 Missed beacon:2

sudo lspci -vvnn
02:02.0 Network controller [0280]: Intel Corporation PRO/Wireless LAN 2100 3B Mini PCI Adapter [8086:1043] (rev 04)
 Subsystem: Intel Corporation Unknown device [8086:2551]
 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B-
 Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
 Latency: 64 (500ns min, 8500ns max), Cache Line Size: 32 bytes
 Interrupt: pin A routed to IRQ 11
 Region 0: Memory at c0210000 (32-bit, non-prefetchable) [size=4K]
 Capabilities: [dc] Power Management version 2
  Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
  Status: D0 PME-Enable- DSel=0 DScale=1 PME-

uname -a
Linux ibmux 2.6.24-23-generic #1 SMP Wed Apr 1 21:47:28 UTC 2009 i686 GNU/Linux

dmesg
[74842.346860] eth1: no IPv6 routers present
[199585.563861] ipw2100: Fatal interrupt. Scheduling firmware restart.
[199591.863511] ipw2100: Fatal interrupt. Scheduling firmware restart.
[74854.872861] ipw2100: Fatal interrupt. Scheduling firmware restart.
[199615.957413] ipw2100: Fatal interrupt. Scheduling firmware restart.
[199622.268519] ipw2100: Fatal interrupt. Scheduling firmware restart.
[199627.719040] ipw2100: Fatal interrupt. Scheduling firmware restart.
[199639.077566] ipw2100: Fatal interrupt. Scheduling firmware restart.
[199646.465495] ipw2100: Fatal interrupt. Scheduling firmware restart.
[199649.476289] ipw2100: Fatal interrupt. Scheduling firmware restart.
[199654.930402] ipw2100: Fatal interrupt. Scheduling firmware restart.
[199660.523830] ipw2100: Fatal interrupt. Scheduling firmware restart.
[199665.798431] ipw2100: Fatal interrupt. Scheduling firmware restart.
[199674.824377] ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[199692.761365] eth1: no IPv6 routers present

(zillions of these)