Php Giant Logo appearing on footer

Hello there to you all, our client is complaining about a php list bug, the logo appears huge and pixelized but only in PC’s operating systems. Is there anyone that experienced this situation? any clue how to solve it? We’re despered and in tisk of loosing this client because of this bug…

Thanks in adavance

@ See this earlier topic Powered by image too large version 3.2.5 for how to resolve the problem.