Serial port & hibernation

[videobruce]

have a HD tuner card that uses the serial port for the IR receiver. It places a icon in the system tray and that is where the infomation for any timed recording is held. I manually put the system into hibernation and 2 minutes before the recording is scheduled to begin the system wakes up (comes out of hibernation) and the program loads and the recording starts. After the recording the program closes and it shuts down the system (or what ever optiuon you choose).

Problem is it's NOT bringing the system out of hibernation any more. It did orginally, but not now. To make a long story shorter, the problem seems to be in the serial port and/or the TCP/IP portion of it since that is how the communicatiuon is handled so I'm told by the vendor of the card. I tried two other programs that will bring the system out of hibernation and the system does respond.

I tried:
Changing O/S's, both 2k & XP
changing Bios versions
reloading the O/S
reloading the program
removing cards
stopping services
checking voltages on the PS
tried two different versions of the s/w for the tuner card

I have:
Expo 8-RDA mb nForce2 chipset w/ the latest bios
AMD 2100b
Antec True Power 330w
PowerColor 9600Pro
2k w/sp4
NO firewall (someone suggested that)
no viruses or spyware

Any ideas? The card in question is:

http://www.digitalconnection.com/Products/Video/mdp120.asp