I still get a "connection lost" message when posting a video

Good morning, Seesmic. I realize this is old news, but just need to let you know this is still happening. After I record a video on Firefox or Safari, I receive a semi-transparent screen with a "connection lost" message. I can still see and hear the video replaying, but when I click "ok" (my only choice), it all disappears.This has been happening since Wednesday, June 25. On Sunday, June 29, I gained the capability of recording 10 second videos without getting the message.

I'm using a MacBook with all updates. I just checked my cable-based internet connection speed: it is 4471 for download and 245 for upload. I've not had any connection interruption issues with other programs, including file uploading on YouSendIt.com which is relatively sensitive. HELP!