Buenas BocadePez, ante todo gracias por contestar.
Te comento, he entrado en la configuración del router, y ya vienen desactivadas las dos opciones que comentas.
También he actualizado el firmware a la ultima versión oficial de Jazztel, ah! a todo esto, es un Comtrend HG 536+.
Bueno, yo siempre subo los archivos vía Web de Megaupload, pero ayer probé a subirlos por su paliación, Mega Manager. Me quedé observando, empieza a subir y llegado un momento, la subida se reinició y empezó a subir desde 0. Y lo hizo un par de veces. Al final de todo me mostró el mensaje de error, con un log, el cual pongo a continuación
i 2010-10-03 11:24:48 Resolving host "www873.megaupload.com"...
i 2010-10-03 11:24:48 Connecting (active)...
X 2010-10-03 11:30:21 Request failed.
i 2010-10-03 11:30:21 Connecting (active)...
i 2010-10-03 11:24:48 Resolving host "www873.megaupload.com"...
i 2010-10-03 11:24:48 Connecting (active)...
X 2010-10-03 11:30:21 Request failed.
i 2010-10-03 11:30:21 Connecting (active)...
> 2010-10-03 11:30:21 POST /uploadquick.php?UPLOAD_IDENTIFIER=04608468400739942440466051072263 HTTP/1.1
> 2010-10-03 11:30:21 Accept: */*
> 2010-10-03 11:30:21 Accept-Encoding: identity
> 2010-10-03 11:30:21 TE: trailers
> 2010-10-03 11:30:21 Host: www873.megaupload.com
> 2010-10-03 11:30:21 Connection: TE,Keep-Alive
> 2010-10-03 11:30:21 Date: Sun, 03 Oct 2010 09:30:21 GMT
> 2010-10-03 11:30:21 Cookie: ; ; ; ; ; ; __utmb=216392970.4.10.1286096132;user=FC81Z3KULPC61LZJQ7XHIMO7Y9AF7TS2;__qca=P0-1744505988-1271574588390;__utmz=216392970.1272179724.2.2.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=megaupload;__utma=216392970.906261914.1271574588.1274220276.1277018279.5;l=es
> 2010-10-03 11:30:21 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
> 2010-10-03 11:30:21 Content-Length: 47
> 2010-10-03 11:30:21 Content-Type: application/x-www-form-urlencoded
X 2010-10-03 11:30:22 Request failed.
i 2010-10-03 11:30:22 Resolving host "www113.megaupload.com"...
i 2010-10-03 11:30:22 Connecting (active)...
X 2010-10-03 11:35:36 Request failed.
i 2010-10-03 11:35:36 Connecting (active)...
i 2010-10-03 11:24:48 Resolving host "www873.megaupload.com"...
i 2010-10-03 11:24:48 Connecting (active)...
X 2010-10-03 11:30:21 Request failed.
i 2010-10-03 11:30:21 Connecting (active)...
> 2010-10-03 11:30:21 POST /uploadquick.php?UPLOAD_IDENTIFIER=04608468400739942440466051072263 HTTP/1.1
> 2010-10-03 11:30:21 Accept: */*
> 2010-10-03 11:30:21 Accept-Encoding: identity
> 2010-10-03 11:30:21 TE: trailers
> 2010-10-03 11:30:21 Host: www873.megaupload.com
> 2010-10-03 11:30:21 Connection: TE,Keep-Alive
> 2010-10-03 11:30:21 Date: Sun, 03 Oct 2010 09:30:21 GMT
> 2010-10-03 11:30:21 Cookie: ; ; ; ; ; ; __utmb=216392970.4.10.1286096132;user=FC81Z3KULPC61LZJQ7XHIMO7Y9AF7TS2;__qca=P0-1744505988-1271574588390;__utmz=216392970.1272179724.2.2.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=megaupload;__utma=216392970.906261914.1271574588.1274220276.1277018279.5;l=es
> 2010-10-03 11:30:21 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
> 2010-10-03 11:30:21 Content-Length: 47
> 2010-10-03 11:30:21 Content-Type: application/x-www-form-urlencoded
X 2010-10-03 11:30:22 Request failed.
i 2010-10-03 11:30:22 Resolving host "www113.megaupload.com"...
i 2010-10-03 11:30:22 Connecting (active)...
X 2010-10-03 11:35:36 Request failed.
i 2010-10-03 11:35:36 Connecting (active)...
> 2010-10-03 11:35:37 POST /uploadquick.php?UPLOAD_IDENTIFIER=04608468400739942440466051072263 HTTP/1.1
> 2010-10-03 11:35:37 Accept: */*
> 2010-10-03 11:35:37 Accept-Encoding: identity
> 2010-10-03 11:35:37 TE: trailers
> 2010-10-03 11:35:37 Host: www113.megaupload.com
> 2010-10-03 11:35:37 Connection: TE,Keep-Alive
> 2010-10-03 11:35:37 Date: Sun, 03 Oct 2010 09:35:36 GMT
> 2010-10-03 11:35:37 Cookie: ; ; ; ; ; ; __utmb=216392970.4.10.1286096132;user=FC81Z3KULPC61LZJQ7XHIMO7Y9AF7TS2;__qca=P0-1744505988-1271574588390;__utmz=216392970.1272179724.2.2.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=megaupload;__utma=216392970.906261914.1271574588.1274220276.1277018279.5;l=es
> 2010-10-03 11:35:37 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
> 2010-10-03 11:35:37 Content-Length: 47
> 2010-10-03 11:35:37 Content-Type: application/x-www-form-urlencoded
X 2010-10-03 11:35:37 Request failed.
i 2010-10-03 11:35:37 Connecting (active)...
X 2010-10-03 11:40:52 Request failed.
i 2010-10-03 11:40:52 Connecting (active)...
i 2010-10-03 11:24:48 Resolving host "www873.megaupload.com"...
i 2010-10-03 11:24:48 Connecting (active)...
X 2010-10-03 11:30:21 Request failed.
i 2010-10-03 11:30:21 Connecting (active)...
> 2010-10-03 11:30:21 POST /uploadquick.php?UPLOAD_IDENTIFIER=04608468400739942440466051072263 HTTP/1.1
> 2010-10-03 11:30:21 Accept: */*
> 2010-10-03 11:30:21 Accept-Encoding: identity
> 2010-10-03 11:30:21 TE: trailers
> 2010-10-03 11:30:21 Host: www873.megaupload.com
> 2010-10-03 11:30:21 Connection: TE,Keep-Alive
> 2010-10-03 11:30:21 Date: Sun, 03 Oct 2010 09:30:21 GMT
> 2010-10-03 11:30:21 Cookie: ; ; ; ; ; ; __utmb=216392970.4.10.1286096132;user=FC81Z3KULPC61LZJQ7XHIMO7Y9AF7TS2;__qca=P0-1744505988-1271574588390;__utmz=216392970.1272179724.2.2.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=megaupload;__utma=216392970.906261914.1271574588.1274220276.1277018279.5;l=es
> 2010-10-03 11:30:21 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
> 2010-10-03 11:30:21 Content-Length: 47
> 2010-10-03 11:30:21 Content-Type: application/x-www-form-urlencoded
X 2010-10-03 11:30:22 Request failed.
i 2010-10-03 11:30:22 Resolving host "www113.megaupload.com"...
i 2010-10-03 11:30:22 Connecting (active)...
X 2010-10-03 11:35:36 Request failed.
i 2010-10-03 11:35:36 Connecting (active)...
> 2010-10-03 11:35:37 POST /uploadquick.php?UPLOAD_IDENTIFIER=04608468400739942440466051072263 HTTP/1.1
> 2010-10-03 11:35:37 Accept: */*
> 2010-10-03 11:35:37 Accept-Encoding: identity
> 2010-10-03 11:35:37 TE: trailers
> 2010-10-03 11:35:37 Host: www113.megaupload.com
> 2010-10-03 11:35:37 Connection: TE,Keep-Alive
> 2010-10-03 11:35:37 Date: Sun, 03 Oct 2010 09:35:36 GMT
> 2010-10-03 11:35:37 Cookie: ; ; ; ; ; ; __utmb=216392970.4.10.1286096132;user=FC81Z3KULPC61LZJQ7XHIMO7Y9AF7TS2;__qca=P0-1744505988-1271574588390;__utmz=216392970.1272179724.2.2.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=megaupload;__utma=216392970.906261914.1271574588.1274220276.1277018279.5;l=es
> 2010-10-03 11:35:37 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
> 2010-10-03 11:35:37 Content-Length: 47
> 2010-10-03 11:35:37 Content-Type: application/x-www-form-urlencoded
X 2010-10-03 11:35:37 Request failed.
i 2010-10-03 11:35:37 Connecting (active)...
X 2010-10-03 11:40:52 Request failed.
i 2010-10-03 11:40:52 Connecting (active)...
> 2010-10-03 11:40:52 POST /uploadquick.php?UPLOAD_IDENTIFIER=14608468400739942440466051072263 HTTP/1.1
> 2010-10-03 11:40:52 Accept: */*
> 2010-10-03 11:40:52 Accept-Encoding: identity
> 2010-10-03 11:40:52 TE: trailers
> 2010-10-03 11:40:52 Host: www873.megaupload.com
> 2010-10-03 11:40:52 Connection: TE,Keep-Alive
> 2010-10-03 11:40:52 Date: Sun, 03 Oct 2010 09:40:52 GMT
> 2010-10-03 11:40:52 Cookie: ; ; ; ; ; ; __utmb=216392970.4.10.1286096132;user=FC81Z3KULPC61LZJQ7XHIMO7Y9AF7TS2;__qca=P0-1744505988-1271574588390;__utmz=216392970.1272179724.2.2.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=megaupload;__utma=216392970.906261914.1271574588.1274220276.1277018279.5;l=es
> 2010-10-03 11:40:52 User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
> 2010-10-03 11:40:52 Content-Length: 47
> 2010-10-03 11:40:52 Content-Type: application/x-www-form-urlencoded
X 2010-10-03 11:40:53 Request failed.