ICA lient invokes reboot on XP workstation

Hello,
I need help. I have a workstation (Windows XP, SP2) that connects to a published application on a remote Citirx server through the ICA client. I login to the Citrix server fine and when I connect to the application server my system reboots itself. I have included the event that occurs.
I would be grateful if anyone has any ideas on this.

Thanks,

Billy.

Event Type:      Error
Event Source:      System Error
Event Category:      (102)
Event ID:      1003
Date:            3/28/2007
Time:            5:45:13 PM
User:            N/A
Computer:      GEO-WS-14
Description:
Error code 1000008e, parameter1 c0000005, parameter2 bff8023d, parameter3 a486e770, parameter4 00000000.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 53 79 73 74 65 6d 20 45   System E
0008: 72 72 6f 72 20 20 45 72   rror  Er
0010: 72 6f 72 20 63 6f 64 65   ror code
0018: 20 31 30 30 30 30 30 38    1000008
0020: 65 20 20 50 61 72 61 6d   e  Param
0028: 65 74 65 72 73 20 63 30   eters c0
0030: 30 30 30 30 30 35 2c 20   000005,
0038: 62 66 66 38 30 32 33 64   bff8023d
0040: 2c 20 61 34 38 36 65 37   , a486e7
0048: 37 30 2c 20 30 30 30 30   70, 0000
0050: 30 30 30 30               0000