iwlwifi connection problem

Ubuntu release 9.04 and kernel image 2.6.28-11.42
Problem is occuring during first bootup and sometimes during wakeup from suspend. Device is unable to connect wireless router and require series manual retry to connect wireless router.

Device:
  *-network
       description: Wireless interface
       product: PRO/Wireless 5100 AGN [Shiloh] Network Connection
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: wmaster0
       version: 00
       serial: 00:22:fa:42:f6:18
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list logical ethernet physical wireless
       configuration: broadcast=yes driver=iwlagn ip=88.112.206.194 latency=0 module=iwlagn multicast=yes wireless=IEEE 802.11abgn

dmesg error
[26448.549049] iwlagn: Removing wrong key 1 0x410b
[26448.549172] ------------[ cut here ]------------
[26448.549177] WARNING: at /build/buildd/linux-2.6.28/drivers/net/wireless/iwlwifi/iwl-sta.c:708 iwl_set_dynamic_key+0x1aa/0x1b0 [iwlcore]()
[26448.549181] no space for new kewModules linked in: nvidia(P) aes_x86_64 aes_generic ppdev bridge stp bnep input_polldev dm_crypt lp parport joydev snd_hda_intel snd_pcm_oss arc4 snd_mixer_oss ecb snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi iwlagn iwlcore snd_rawmidi led_class snd_seq_midi_event snd_seq mac80211 psmouse uvcvideo snd_timer snd_seq_device pcspkr video serio_raw compat_ioctl32 videodev v4l1_compat snd soundcore snd_page_alloc iTCO_wdt iTCO_vendor_support cfg80211 sdhci_pci sdhci output btusb intel_agp usbhid tg3 fbcon tileblit font bitblit softcursor [last unloaded: nvidia]
[26448.549257] Pid: 10, comm: events/1 Tainted: P W 2.6.28-11-generic #42-Ubuntu
[26448.549261] Call Trace:
[26448.549273] [<ffffffff80250927>] warn_slowpath+0xb7/0xf0
[26448.549280] [<ffffffff802fca21>] ? alloc_inode+0x1f1/0x220
[26448.549285] [<ffffffff802fca21>] ? alloc_inode+0x1f1/0x220
[26448.549292] [<ffffffff8031765e>] ? inotify_d_instantiate+0x4e/0x60
[26448.549305] [<ffffffffa0ba52b0>] ? iwl4965_mac_set_key+0x0/0x160 [iwlagn]
[26448.549312] [<ffffffff803bff62>] ? debugfs_mknod+0xd2/0x130
[26448.549316] [<ffffffff802fb499>] ? dput+0xb9/0x190
[26448.549321] [<ffffffff803c0108>] ? debugfs_create_by_name+0x148/0x220
[26448.549328] [<ffffffff8022f669>] ? default_spin_lock_flags+0x9/0x10
[26448.549342] [<ffffffffa0b909da>] iwl_set_dynamic_key+0x1aa/0x1b0 [iwlcore]
[26448.549354] [<ffffffffa0ba53dc>] iwl4965_mac_set_key+0x12c/0x160 [iwlagn]
[26448.549381] [<ffffffffa0b2bd83>] ieee80211_key_enable_hw_accel+0x83/0x160 [mac80211]
[26448.549387] [<ffffffff803bfe85>] ? debugfs_remove+0x65/0x70
[26448.549409] [<ffffffffa0b2c120>] __ieee80211_key_todo+0x130/0x1b0 [mac80211]
[26448.549431] [<ffffffffa0b2c300>] ? key_todo+0x0/0x10 [mac80211]
[26448.549452] [<ffffffffa0b2c2e5>] ieee80211_key_todo+0x15/0x30 [mac80211]
[26448.549473] [<ffffffffa0b2c309>] key_todo+0x9/0x10 [mac80211]
[26448.549479] [<ffffffff8026430a>] run_workqueue+0xba/0x190
[26448.549486] [<ffffffff802645e7>] worker_thread+0xa7/0x120
[26448.549492] [<ffffffff80268930>] ? autoremove_wake_function+0x0/0x40
[26448.549497] [<ffffffff80264540>] ? worker_thread+0x0/0x120
[26448.549503] [<ffffffff802684c9>] kthread+0x49/0x90
[26448.549509] [<ffffffff80213979>] child_rip+0xa/0x11
[26448.549515] [<ffffffff80268480>] ? kthread+0x0/0x90
[26448.549520] [<ffffffff8021396f>] ? child_rip+0x0/0x11
[26448.549523] ---[ end trace 7052151cbb8cfea8 ]---