PCLSM

Its only just started happening but my screen has pretty much become un responsive then it seems to work fine then goes completely mental, i.e. im not touching it and it moves between the home screens or if im texting it looks like im sliding my finger along the bottom few letters but im not even touching the phone......odd
i seem to be able to control it without touching the phone, ie when it goes mental i hover my finger over the phone it thinks im touching it, but i cant select anything just stop it from moving all over the place.....
im gunna get a new one seeing as im insured for a quid a month (renewal deal) but i wanted some thoughts on the situation.....

Thanks,

P