Narrowed down the issue to laptop-mode-tools. If ethernet control is disabled the issue is solved.
Apr 5 18:51:02 laptop kernel: [ 7.928034] ------------[ cut here ]------------
Apr 5 18:51:02 laptop kernel: [ 7.928063] WARNING: at /build/buildd-linux_3.2.41-2-amd64-Wvc92F/linux-3.2.41/drivers/net/ethernet/intel/e1000e/netdev.c:5333 __e1000_shutdown+0x6f/0x3ea [e1000e]()
Apr 5 18:51:02 laptop kernel: [ 7.928067] Hardware name: 7465CTO
Apr 5 18:51:02 laptop kernel: [ 7.928069] Modules linked in: ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp iptable_filter ip_tables x_tables tun bridge stp parport_pc ppdev lp parport bnep rfcomm uinput ext2 tp_smapi(O) thinkpad_ec(O) loop kvm_intel kvm snd_hda_codec_conexant arc4 thinkpad_acpi nvram snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_page_alloc snd_seq snd_seq_device snd_timer snd iwlwifi mac80211 psmouse iTCO_wdt btusb serio_raw bluetooth pcspkr cfg80211 coretemp i2c_i801 iTCO_vendor_support evdev soundcore rfkill i915 battery ac power_supply drm_kms_helper drm acpi_cpufreq wmi mperf video i2c_algo_bit i2c_core button processor ext4 crc16 jbd2 mbcache dm_mod microcode sg sd_mod crc_t10dif ahci libahci thermal thermal_sys uhci_hcd ata_generic libata scsi_mod ehci_hcd e1000e usbcore usb_common [last unloaded: scsi_wait_scan]
Apr 5 18:51:02 laptop kernel: [ 7.928140] Pid: 11, comm: kworker/0:1 Tainted: G O 3.2.0-4-amd64 #1 Debian 3.2.41-2
Apr 5 18:51:02 laptop kernel: [ 7.928142] Call Trace:
Apr 5 18:51:02 laptop kernel: [ 7.928149] [<ffffffff81046a55>] ? warn_slowpath_common+0x78/0x8c
Apr 5 18:51:02 laptop kernel: [ 7.928160] [<ffffffffa007cfc8>] ? __e1000_shutdown+0x6f/0x3ea [e1000e]
Apr 5 18:51:02 laptop kernel: [ 7.928171] [<ffffffffa007d374>] ? e1000_runtime_suspend+0x31/0x39 [e1000e]
Apr 5 18:51:02 laptop kernel: [ 7.928177] [<ffffffff811c5ce8>] ? pci_pm_runtime_suspend+0x43/0xd6
Apr 5 18:51:02 laptop kernel: [ 7.928181] [<ffffffff811c5ca5>] ? pci_legacy_suspend_late+0xbd/0xbd
Apr 5 18:51:02 laptop kernel: [ 7.928186] [<ffffffff81257662>] ? __rpm_callback+0x2c/0x50
Apr 5 18:51:02 laptop kernel: [ 7.928189] [<ffffffff81257bc1>] ? rpm_suspend+0x271/0x401
Apr 5 18:51:02 laptop kernel: [ 7.928194] [<ffffffff8103981a>] ? finish_task_switch+0x4e/0xb9
Apr 5 18:51:02 laptop kernel: [ 7.928197] [<ffffffff812588d7>] ? pm_runtime_work+0x65/0x7e
Apr 5 18:51:02 laptop kernel: [ 7.928202] [<ffffffff8105b225>] ? process_one_work+0x161/0x264
Apr 5 18:51:02 laptop kernel: [ 7.928205] [<ffffffff8105c1e6>] ? worker_thread+0xc2/0x145
Apr 5 18:51:02 laptop kernel: [ 7.928209] [<ffffffff8105c124>] ? manage_workers.isra.25+0x15b/0x15b
Apr 5 18:51:02 laptop kernel: [ 7.928213] [<ffffffff8105f321>] ? kthread+0x76/0x7e
Apr 5 18:51:02 laptop kernel: [ 7.928217] [<ffffffff81354ab4>] ? kernel_thread_helper+0x4/0x10
Apr 5 18:51:02 laptop kernel: [ 7.928222] [<ffffffff8105f2ab>] ? kthread_worker_fn+0x139/0x139
Apr 5 18:51:02 laptop kernel: [ 7.928225] [<ffffffff81354ab0>] ? gs_change+0x13/0x13
Apr 5 18:51:02 laptop kernel: [ 7.928227] ---[ end trace 2ee513d3cae1946f ]---
Will let you know what happens with kernel 3.8.y once i upgrade.