What does this mean? Is it serious?

[existenz]

Warning : An error was detected on device \Device\CdRom1 during a paging operation.

DCOM got error "The service cannot be started, either because it is disabled or because it has no enabled devices associated with it. " attempting to start the service ImapiService with arguments "-Service" in order to run the server:
{520CCA63-51A5-11D3-9144-00104BA11C5E}

Are these two errors serious or what?

 

[existenz]

and also:

AMLI: ACPI BIOS is attempting to read from an illegal IO port address (0x71), which lies in the 0x70 - 0x71 protected address range. This could lead to system instability. Please contact your system vendor for technical assistance.

these are errors i always get...

is this serious?

 

[Qumahlin]

the first one is coming up as an error because you have IMAPI disabled (IMAPI is winXP's built in burning) so feel free to ignore it, as for the other error I have no idea