Allright done that with (Linux  3.10.0-031000rc5-generic #201306082135
SMP Sun Jun 9 01:36:22 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux)

First I removed the workaround stuff, namely:

    sudo echo acpiphp >> /etc/modules:

Modify /etc/default/grub to have:

    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pciehp_force=1
pciehp_poll_mode=1"

Result: Card is not detected when plugging it in after boot.

Now I wanted to check if the workaround helps, but

modprobe acpiphp
FATAL: Module acpiphp not found.

Plus my Computer won't boot when the card is inserted, log:

[    0.869378] xhci_hcd 0000:05:00.0: xHCI Host Controller
[    0.869382] xhci_hcd 0000:05:00.0: new USB bus registered, assigned bus 
number 3
[    1.785834] tsc: Refined TSC clocksource calibration: 2292.554 MHz
[    1.785840] Switching to clocksource tsc
 - here it hangs until the card is removed -
[   13.253006] xhci_hcd 0000:05:00.0: can't setup
[   13.253012] xhci_hcd 0000:05:00.0: USB bus 3 deregistered
[   13.253076] xhci_hcd 0000:05:00.0: init 0000:05:00.0 fail, -19

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https://bugs.launchpad.net/bugs/999462

Title:
  ExpressCard34 slot not hotplugable after boot

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