Does using a third party(non-Apple) MagSafe 45W power adaptor cause power problems with MacBookAir I had to replace my power adaptor of 2010 version MacBookAir with a third party power adaptor (because it was cheaper) a few months down the line I am having to force wake up my MacBookAir and worried that the third party adaptor may be slowly damaging internal power circuitary. Am I right to be worried?

Thanks for any help.
Yes, you should be worried. Power adapters which have not been Apple certified can be shoddily constructed, have inferior components, and frequently lack safety mechanisms that prevent harm to your device and yourself. This article at Macworld about iPhone chargers shows some of the problems. This forum thread at MacRumors discusses MacBook chargers specifically.

You may save a few dollars getting a non-Apple branded charger, but if it damages your machine, you may just end up spending much more money in the end.