Update failing on wireless laptop

ever since i installed comodo 2 weeks ago onto my wireless laptop comodo updating hasnt worked, yet when i installed it on my desktop pc connected to the wireless router with a ethernet cable it updates.

i was wondering if anyone else had this problem and if anyone new a fix for this.

i am running vista x32 on both the laptop and pc.

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On What OS are you on. On Win 7 beta it helps to make cfpupdt.exe Vista compatible.