Just started happening today. Throttle is being seen in AH. However several times it has stopped input to flight controls during sorties over several hours. Powered 4 slot USB hub with a saitek throttle quad. and CH stick and pedals no problem with them. Pulled x-52 from hub and tried it in computer usb port, and similar event occurred after awhile. I don't use saiteks software, any ideas on cause. Hardware or software issue? Well flew for awhile, then lost all inputs, going to try some contact cleaner on USB. Hasn't been used for a time.