[ubuntu] Aspire 5515 USB issue?

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http://ubuntuforums.org – I have an Acer Aspire 5515 Notebook that has an odd issue with what I beleive to be a USB issue with Ubuntu 9.10 What happens is that after the system is booted for about 10 minutes it seems to loose usb functionallty I suspect. It looses wifi which I am using a usb adapter and the usb mouse seems to go aswell. I only have this problem with the 9.10 release and Mint 8 which is based on 9.10 If I run 9.04 or Mint 7 the problem is not there. I guess my question is if should just run a legacy edition of ubuntu on this computer or has somebody have any suggestions to t (Hardware)