Windows Live Mail Issue in Internet Explorer 7

I've been using windows live for a while now, the full version, works perfectly fine, only thing is it doesnt when I use it on my laptop, the only problem is, when I try to check emails by clicking the check boxes, it ticks, then the tick disappears, say i click delete, it will delete the file, but I cant manually choose more than 1 file at a time, which is really anoying, I tried it on firefox and it works perfect, so I guess the problem lies is internet explorer, has anyone had this problem, how can it be solved?