I have dmesgs for the case of working (in Mandriva) and not working (in Ubuntu dapper). 

Working:
[17179598.448000] ACPI: PCI Interrupt 0000:00:0a.0[A] -> Link [LNKA] ->
GSI 9 (level, low) -> IRQ 9
[17179598.448000] Yenta: CardBus bridge found at 0000:00:0a.0
[104d:80f6]
[17179598.448000] Yenta: Enabling burst memory read transactions
[17179598.448000] Yenta: Using CSCINT to route CSC interrupts to PCI
[17179598.448000] Yenta: Routing CardBus interrupts to PCI
[17179598.448000] Yenta TI: socket 0000:00:0a.0, mfunc 0x012c1222,
devctl 0x66
[17179598.680000] Yenta: ISA IRQ mask 0x0808, PCI irq 9
[17179598.680000] Socket status: 30000006
[17179598.692000] ACPI: PCI Interrupt 0000:00:0a.1[B] -> Link [LNKB] ->
GSI 10 (level, low) -> IRQ 10
[17179598.692000] Yenta: CardBus bridge found at 0000:00:0a.1
[104d:80f6]
[17179598.692000] Yenta: Using CSCINT to route CSC interrupts to PCI
[17179598.692000] Yenta: Routing CardBus interrupts to PCI
[17179598.692000] Yenta TI: socket 0000:00:0a.1, mfunc 0x012c1222,
devctl 0x66
[17179598.924000] Yenta: ISA IRQ mask 0x0808, PCI irq 10
[17179598.924000] Socket status: 30000010
[17179599.872000] cs: IO port probe 0xc00-0xcff: clean.
[17179599.872000] cs: IO port probe 0xc00-0xcff: clean.
[17179599.872000] cs: IO port probe 0x100-0x4ff: excluding 0x378-0x37f
0x4d0-0x4d7
[17179599.876000] cs: IO port probe 0x100-0x4ff: excluding 0x378-0x37f
0x4d0-0x4d7
[17179599.880000] cs: IO port probe 0xa00-0xaff: clean.
[17179599.880000] cs: IO port probe 0xa00-0xaff: clean.
[17179599.920000] cs: memory probe 0xa0000000-0xa0ffffff: clean.
[17179600.732000] eth1: 3Com 3c589, io 0x300, irq 3, hw_addr
00:00:86:1A:4E:A8
[17179600.732000]   8K FIFO split 5:3 Rx:Tx, auto xcvr
[17179600.776000] ttyS1 at I/O 0x2f8 (irq = 10) is a 16550A

Not working (ubuntu dapper):

[17179598.628000] Yenta: CardBus bridge found at 0000:00:0a.0
[104d:80f6]
[17179598.628000] Yenta: Using CSCINT to route CSC interrupts to PCI
[17179598.628000] Yenta: Routing CardBus interrupts to PCI
[17179598.628000] Yenta TI: socket 0000:00:0a.0, mfunc 0x012c1222,
devctl 0x66
[17179598.788000] **** SET: Misaligned resource pointer: d961bb22 Type
07 Len 0
[17179598.788000] ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 5
[17179598.788000] PCI: setting IRQ 5 as level-triggered
[17179598.788000] ACPI: PCI Interrupt 0000:00:07.5[C] -> Link [LNKC] ->
GSI 5 (level, low) -> IRQ 5
[17179598.788000] PCI: Setting latency timer of device 0000:00:07.5 to
64
[17179598.860000] Yenta: ISA IRQ mask 0x0808, PCI irq 9
[17179598.860000] Socket status: 30000068
[17179598.860000] ACPI: PCI Interrupt 0000:00:0a.1[B] -> Link [LNKB] ->
GSI 10 (level, low) -> IRQ 10
[17179598.860000] Yenta: CardBus bridge found at 0000:00:0a.1
[104d:80f6]
[17179598.860000] Yenta: Using CSCINT to route CSC interrupts to PCI
[17179598.860000] Yenta: Routing CardBus interrupts to PCI
[17179598.860000] Yenta TI: socket 0000:00:0a.1, mfunc 0x012c1222,
devctl 0x66
[17179598.940000] parport_pc: VIA parallel port: io=0x378, irq=7
[17179599.008000] Real Time Clock Driver v1.12
[17179599.092000] Yenta: ISA IRQ mask 0x0808, PCI irq 10
[17179599.092000] Socket status: 30000059
....
[17179600.324000] cs: IO port probe 0x100-0x3af: clean.
[17179600.324000] cs: IO port probe 0x3e0-0x4ff: clean.
[17179600.324000] cs: IO port probe 0x820-0x8ff: clean.
[17179600.328000] cs: IO port probe 0xc00-0xcf7: clean.
[17179600.328000] cs: IO port probe 0xa00-0xaff: clean.
[17179600.328000] cs: IO port probe 0x100-0x3af: clean.
[17179600.332000] cs: IO port probe 0x3e0-0x4ff: clean.
[17179600.332000] cs: IO port probe 0x820-0x8ff: clean.
[17179600.332000] cs: IO port probe 0xc00-0xcf7: clean.
[17179600.336000] cs: IO port probe 0xa00-0xaff: clean.
[17179600.336000] cs: memory probe 0xa0000000-0xa0ffffff: clean.
[17179600.340000] pcmcia: registering new device pcmcia1.0
[17179600.620000] rtl8180: Setting SW wep key
[17179600.724000] eth1: 3Com 3c589, io 0x300, irq 3, hw_addr
00:00:86:1A:4E:A8
[17179600.724000]   8K FIFO split 5:3 Rx:Tx, auto xcvr
...
[17180448.512000] pccard: card ejected from slot 1
[17180487.964000] pccard: PCMCIA card inserted into slot 1
[17180487.964000] pcmcia: registering new device pcmcia1.0
[17180488.016000] eth1: 3Com 3c589, io 0x300, irq 3, hw_addr
00:00:86:1A:4E:A8
[17180488.016000]   8K FIFO split 5:3 Rx:Tx, auto xcvr
[17180498.796000] eth1: no IPv6 routers present

...and no modem (well, serial) detected.