My problem seems similar. This error message on a desktop (Gigabyte GA-965P-DS4, Core 2 Duo E6300, Intel P965 chipset, 2GB RAM) after every resume:
[15941.196028] usb 3-1: reset full speed USB device using uhci_hcd and address 2
[15941.612030] usb 7-1: reset low speed USB device using uhci_hcd and address 2
[15942.053372] PM: resume devices took 8.420 seconds
[15942.053377] ------------[ cut here ]------------
[15942.053379] WARNING: at /build/buildd/linux-2.6.28/kernel/power/main.c:177 su
spend_test_finish+0x80/0x90()
[15942.053381] Component: resume devices
[15942.053382] Modules linked in: nfs lockd nfs_acl sunrpc binfmt_misc bnep ipt_
MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_connt
rack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp input_pol
ldev video output lp snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dum
my snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd
_seq_device snd soundcore iTCO_wdt pcspkr serio_raw snd_page_alloc intel_agp ppd
ev parport_pc parport iTCO_vendor_support heci nvidia(P) agpgart joydev usbhid o
hci1394 ieee1394 usb_storage sky2 e1000e fbcon tileblit font bitblit softcursor
[15942.053419] Pid: 18688, comm: pm-suspend Tainted: P           2.6.28-11-generic #42-Ubuntu
[15942.053421] Call Trace:
[15942.053425]  [<c0139ab0>] warn_slowpath+0x60/0x80
[15942.053428]  [<c01537fa>] ? down_trylock+0x2a/0x40
[15942.053432]  [<c013a10d>] ? try_acquire_console_sem+0xd/0x30
[15942.053436]  [<c02c7290>] ? kobject_put+0x20/0x50
[15942.053440]  [<c0500ac6>] ? printk+0x18/0x1a
[15942.053442]  [<c0164fd0>] suspend_test_finish+0x80/0x90
[15942.053445]  [<c01650a6>] suspend_devices_and_enter+0xc6/0x160
[15942.053448]  [<c0500ac6>] ? printk+0x18/0x1a
[15942.053451]  [<c0165329>] enter_state+0xc9/0x100
[15942.053453]  [<c01653dd>] state_store+0x7d/0xc0
[15942.053456]  [<c0165360>] ? state_store+0x0/0xc0
[15942.053459]  [<c02c7154>] kobj_attr_store+0x24/0x30
[15942.053462]  [<c020ab02>] sysfs_write_file+0x92/0xf0
[15942.053465]  [<c01bdab8>] vfs_write+0x98/0x110
[15942.053468]  [<c020aa70>] ? sysfs_write_file+0x0/0xf0
[15942.053470]  [<c01bdbed>] sys_write+0x3d/0x70
[15942.053473]  [<c0103f6b>] sysenter_do_call+0x12/0x2f
[15942.053476]  [<c0500000>] ? relay_hotcpu_callback+0x6d/0xbd
[15942.053478] ---[ end trace e7db2c56a62f495c ]---

followed by:
[15960.000549] Corrupted low memory at c000e48c (e48c phys) = 00004000
[15960.000558] ------------[ cut here ]------------
[15960.000560] WARNING: at /build/buildd/linux-2.6.28/arch/x86/kernel/setup.c:719 check_for_bios_corruption+0xc8/0xd0()
[15960.000562] Memory corruption detected in low memory
[15960.000564] Modules linked in: nfs lockd nfs_acl sunrpc binfmt_misc bnep ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables bridge stp input_polldev video output lp snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore iTCO_wdt pcspkr serio_raw snd_page_alloc intel_agp ppdev parport_pc parport iTCO_vendor_support heci nvidia(P) agpgart joydev usbhid ohci1394 ieee1394 usb_storage sky2 e1000e fbcon tileblit font bitblit softcursor
[15960.000606] Pid: 4, comm: ksoftirqd/0 Tainted: P        W  2.6.28-11-generic #42-Ubuntu
[15960.000608] Call Trace:
[15960.000613]  [<c0139ab0>] warn_slowpath+0x60/0x80
[15960.000617]  [<c01537fa>] ? down_trylock+0x2a/0x40
[15960.000621]  [<c013a10d>] ? try_acquire_console_sem+0xd/0x30
[15960.000625]  [<c0502c0e>] ? _spin_lock_irqsave+0x2e/0x40
[15960.000629]  [<c0500ac6>] ? printk+0x18/0x1a
[15960.000632]  [<c01079c8>] check_for_bios_corruption+0xc8/0xd0
[15960.000636]  [<c01079d8>] periodic_check_for_corruption+0x8/0x30
[15960.000639]  [<c0143b00>] run_timer_softirq+0x130/0x200
[15960.000643]  [<c01079d0>] ? periodic_check_for_corruption+0x0/0x30
[15960.000646]  [<c012f9cb>] ? finish_task_switch+0x2b/0xe0
[15960.000650]  [<c01079d0>] ? periodic_check_for_corruption+0x0/0x30
[15960.000654]  [<c013f197>] __do_softirq+0x97/0x170
[15960.000657]  [<c013f2cd>] do_softirq+0x5d/0x60
[15960.000660]  [<c013f35a>] ksoftirqd+0x8a/0x120
[15960.000663]  [<c013f2d0>] ? ksoftirqd+0x0/0x120
[15960.000667]  [<c014e90c>] kthread+0x3c/0x70
[15960.000669]  [<c014e8d0>] ? kthread+0x0/0x70
[15960.000673]  [<c0105477>] kernel_thread_helper+0x7/0x10
[15960.000675] ---[ end trace e7db2c56a62f495c ]---