Why does wireless signal dissappear?

  pollpott 18:15 16 May 2005

I had successfully set up a wireless connection between 2 computers, both using XP, using 2 Belkin cards on an Ad Hoc,(computer to computer)basis. This was not an easy process but eventually it was all working, including WEP setup.When I returned to the computer later, the signal, which had been good or very good had gone completely.Why is this?
Any ideas?

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