MARKS & SPENCER (MKS) Very Top Heavy - Short from £4.01p Oct 2005

Can someone explain to me how this share justifies a 43% increase since it was worth £3.50 back in September. They can't have possibly increased sales by 43% can they. I also thought that they were priced at £3.50 (above the price they should have been) because they were a potential take over target, now that they are over £5.00 no one is going to buy them are they???

I've shorted them a three times and been stopped out three times, I need to get my money back so want to know the upper limit.