請問一下rapidshare - 免空

最近要下載都會出現以下訊息

The download session has expired. Please click here to start the download
again.

Possible reasons:

The download takes to long to be saved.
For this download, in the background your Internet Service Provider has
assigned a new IP address. If you are for example an AOL customer, or use a
similar Service Provider, please try to use a different browser.

是學校網路的問題嗎?還是每個ISP都這樣?

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