Logo issues
Using Jamroom
when you uploaded the new image under it you would see the dimentions eg: 559 x 320
go to:
ACP -> SKINS -> NOVA -> TEMPLATES -> header.tpl -> MODIFY
and on line 38 you will find:
{jrCore_image image="logo.png" width="325" height="75" change the width and height to what your after.
Also remove the
style="max-width:325px;max-height:75px;"click SAVE CHANGES.
Go back to the TEMPLATES list screen and activate it.