Very, very, very weird connection problem

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The Dreamhost web hosting thread below was started by tomvdp on 2010-04-05 04:29:18:

Post Reply? Hello, This is the situation: - running phpBB, Wordpress, SVN, some other, all successfully for months, some for years - suddenly unable to upload media via the applications (attachments in phpBB, media in Wordpress, etc) - WebFTP gives me connection problems too - normal FTP too: able to create directories, but unable to put files What seems to be the matter: it is my pc that is somehow not willing to do HTTP POST to dreamhost ?! I can upload to any other site, but not dreamhost. Even more weird: from within a VM on that same pc it does work, from another pc on the same lan it works too… so it is not my router or a network thing. The pc runs XP sp2. I have already run “winsockxpfix”, registry cleaners, etc, to no avail. Sniffing the packets I see one HTTP Post packet and then the conversations stops. I can still browse everything just fine, only sending data to dreamhost gets blocked somewhere. I have absolutely no idea how to fix this or even where to look. I am hoping some genius here can give me a clue! Thanks (I had to post this from within a VM!) XP sp2 D-Link 655 router no firewall no antivirus (for now)

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