Tu lo has querido...
Esta línea funciona bien en los dos exploradores:
Código PHP:
<A HREF="formulario.php?envia_datos=a%3A2%3A%7Bs%3A2%3A%22do%22%3Bs%3A3%3A%22ins%22%3Bs%3A8%3A%22apartado%22%3Bs%3A9%3A%22piniculas%22%3B%7D">Añadir nueva</A> | <A HREF="formulario.php?envia_datos=a%3A24%3A%7Bs%3A2%3A%22id%22%3Bs%3A2%3A%2262%22%3Bs%3A11%3A%22fecha_intro%22%3Bs%3A9%3A%225-12-2002%22%3Bs%3A6%3A%22titulo%22%3Bs%3A65%3A%22007+-+El+Ma%F1ana+Nunca+Muere+%28T%EDtulo+original%3ATomorrow+never+dies%29%22%3Bs%3A11%3A%22titoriginal%22%3Bs%3A0%3A%22%22%3Bs%3A3%3A%22ano%22%3Bs%3A4%3A%221997%22%3Bs%3A12%3A%22nacionalidad%22%3Bs%3A10%3A%22Inglaterra%22%3Bs%3A8%3A%22director%22%3Bs%3A18%3A%22Roger+Spottiswoode%22%3Bs%3A7%3A%22reparto%22%3Bs%3A47%3A%22Pierce+Brosnan%0D%0AJonathan+Pryce%0D%0AMichelle+Yeoh%0D%0A%22%3Bs%3A6%3A%22genero%22%3Bs%3A6%3A%22Acci%F3n%22%3Bs%3A8%3A%22sinopsis%22%3Bs%3A305%3A%22Durante+una+misi%F3n+en+el+paso+de+Khyber%2C+James+Bond+consigue+desbaratar+una+operaci%F3n+de+intercambio+de+armas+at%F3micas%2C+pero+no+puede+impedir+que+un+peligroso+tecnoterrorista+escape+del+lugar+con+un+temporizador+at%F3mico+y+un+torpedo+nuclear+sovi%E9tico+que+puede+poner+en+peligro+la+seguridad+mundial.%0D%0A%0D%0A%0D%0A%22%3Bs%3A6%3A%22coment%22%3Bs%3A0%3A%22%22%3Bs%3A8%3A%22duracion%22%3Bs%3A2%3A%2290%22%3Bs%3A3%3A%22cds%22%3Bs%3A1%3A%221%22%3Bs%3A5%3A%22afoto%22%3Bs%3A0%3A%22%22%3Bs%3A11%3A%22codec_video%22%3Bs%3A1%3A%22-%22%3Bs%3A11%3A%22codec_audio%22%3Bs%3A1%3A%22-%22%3Bs%3A6%3A%22audio1%22%3Bs%3A7%3A%22Espa%F1ol%22%3Bs%3A6%3A%22audio2%22%3Bs%3A0%3A%22%22%3Bs%3A13%3A%22calidad_video%22%3Bs%3A0%3A%22%22%3Bs%3A13%3A%22calidad_audio%22%3Bs%3A0%3A%22%22%3Bs%3A5%3A%22calif%22%3Bs%3A1%3A%226%22%3Bs%3A8%3A%22poseedor%22%3Bs%3A4%3A%22Mich%22%3Bs%3A2%3A%22do%22%3Bs%3A3%3A%22act%22%3Bs%3A8%3A%22apartado%22%3Bs%3A9%3A%22piniculas%22%3B%7D">Actualizar</A>
y esta me da el error en el explorer:
Código PHP:
<A HREF="formulario.php?envia_datos=a%3A2%3A%7Bs%3A2%3A%22do%22%3Bs%3A3%3A%22ins%22%3Bs%3A8%3A%22apartado%22%3Bs%3A9%3A%22piniculas%22%3B%7D">Añadir nueva</A> | <A HREF="formulario.php?envia_datos=a%3A24%3A%7Bs%3A2%3A%22id%22%3Bs%3A2%3A%2217%22%3Bs%3A11%3A%22fecha_intro%22%3Bs%3A9%3A%222-12-2002%22%3Bs%3A6%3A%22titulo%22%3Bs%3A66%3A%222001+Despega+como+puedas+%28T%EDtulo+original%3A+2001%3A+A+space+travesty%29%22%3Bs%3A11%3A%22titoriginal%22%3Bs%3A0%3A%22%22%3Bs%3A3%3A%22ano%22%3Bs%3A4%3A%222000%22%3Bs%3A12%3A%22nacionalidad%22%3Bs%3A3%3A%22USA%22%3Bs%3A8%3A%22director%22%3Bs%3A14%3A%22Allan+Goldtein%22%3Bs%3A7%3A%22reparto%22%3Bs%3A206%3A%22Leslie+Nielsen%0D%0A+Richard+%93Dick%94+Dix+%0D%0AOph%E8lie+Winter%0D%0A+Cassandra+Menage+%0D%0AEzio+Greggio%0D%0A+Valentino+Di+Pasquale+%0D%0APeter+Egan%0D%0A+Doctor+Pratt+%0D%0ADamian+Mason%0D%0A+Bill+Clinton+%0D%0AAlexandra+Kamp%0D%0A+Uschi+Kuentsler+%0D%0A%22%3Bs%3A6%3A%22genero%22%3Bs%3A7%3A%22Comedia%22%3Bs%3A8%3A%22sinopsis%22%3Bs%3A1403%3A%22Cuando+una+fuente+oficial+da+la+extra%F1a+noticia+de+que+el+presidente+de+los+Estados+Unidos+est%E1+retenido+en+una+base+lunar+internacional+llamada+Vegan%2C+y+que+hay+un+clon+que+ha+usurpado+su+lugar+en+la+Tierra%2C+la+polic%EDa+de+los+Estados+Unidos+no+duda+en+enviar+a+su+%93mejor%94+agente%2C+el+experimentado+Richard+%93Dick%94+Dix+%28Leslie+Nielsen%29%2C+para+investigar.+%0D%0ATan+gallito+como+inepto%2C+Dix+se+ve+inmerso+en+una+intriga+que+podr%EDa+acabar+con+todos+los+ideales+en+los+que+cree%2C+aunque+nunca+haya+llegado+a+entenderlos%3A+la+Verdad%2C+la+Justicia+y+el+Modo+de+Vida+Americano.+%0D%0ADespu%E9s+de+recibir+instrucciones+urgentes+de+su+jefe%2C+el+secretario+Osgood%2C+y+de+una+seductora+enviada+de+Vegan%2C+Cassandra+Menage%2C+Dix+emprende+vuelo+a+la+Luna+en+un+transbordador+espacial.+%0D%0ADix+no+se+desenvuelve+demasiado+bien+en+la+ingravidez.+La+comida+y+la+bebida+que+le+sirven+a+bordo+se+niegan+a+estarse+quietas+y+le+amargan+el+vuelo.+M%E1s+tarde%2C+el+agente+est%E1+a+punto+de+destruir+la+nave+por+culpa+de+un+percance+g%E1strico+que+le+convierte+en+un+cohete+humano%2C+propuls%E1ndole+hacia+la+cabina+a+trav%E9s+de+la+puerta+del+cuarto+de+ba%F1o.+La+nave+brinca%2C+zozobra+y+sacude+a+Dix+como+una+batidora%2C+pero+consigue+mantener+el+rumbo+y+llegar+a+su+destino+sano+y+salvo.%0D%0AEn+la+Luna%2C+el+temible+agente+Dix+se+hace+digno+de+la+fama+de+rey+del+caos+que+se+ha+creado+en+la+Tierra%3A+est%E1+a+punto+de+borrar+el+sat%E9lite+lunar+de+la+faz+del+universo.%0D%0A%22%3Bs%3A6%3A%22coment%22%3Bs%3A0%3A%22%22%3Bs%3A8%3A%22duracion%22%3Bs%3A3%3A%22100%22%3Bs%3A3%3A%22cds%22%3Bs%3A1%3A%221%22%3Bs%3A5%3A%22afoto%22%3Bs%3A0%3A%22%22%3Bs%3A11%3A%22codec_video%22%3Bs%3A1%3A%22-%22%3Bs%3A11%3A%22codec_audio%22%3Bs%3A1%3A%22-%22%3Bs%3A6%3A%22audio1%22%3Bs%3A7%3A%22Espa%F1ol%22%3Bs%3A6%3A%22audio2%22%3Bs%3A0%3A%22%22%3Bs%3A13%3A%22calidad_video%22%3Bs%3A0%3A%22%22%3Bs%3A13%3A%22calidad_audio%22%3Bs%3A0%3A%22%22%3Bs%3A5%3A%22calif%22%3Bs%3A1%3A%224%22%3Bs%3A8%3A%22poseedor%22%3Bs%3A4%3A%22Mich%22%3Bs%3A2%3A%22do%22%3Bs%3A3%3A%22act%22%3Bs%3A8%3A%22apartado%22%3Bs%3A9%3A%22piniculas%22%3B%7D">Actualizar</A>
Ya te dije q eran muuuy largas, todavía no descarto q sea un error de mi explorer, tendré q decirle a alguien q pruebe con otro...