when left and up/down keys are pressed together, the one which is pressed later does not work1 person needs an answerI do too

when left and up/down keys are pressed together, the one which is pressed later does not workthats an "oxymoron" some help herehttp://www.google.co.uk/search?q=left+arrow+key+not+working&rls=com.microsoft:en-gb:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7GGLT_en&redir_esc=&ei=ka3ETPHYGtKM4gbGzsW5Aw