Certificate expiry problem on Symbian Series60v3 handhelds

This problem is normally encountered on most of the Nokia N-series mobiles having Symbian Series60v3 when one tries to install sis files that are meant to run before a specific date.In order to resolve this issue you must change your date settings by going to tools->settings->Date&Time. Change one to two years behind and kaboomb!No more certificate expiry problems...