Firefox 1.5.0.4 is a stability-and-security update, released 2006-06-01. It has fixed for several security holes and several topcrash bugs, as well as over a hundred other bugs, including:
Fixed: 336875 - With Adblock Plus 0.7 installed, images disappear upon reloading any page.
Fixed: 133439 - Copy to clipboard fails OLE call with CLIPBRD_E_CANT_OPEN.