It seems to be caused by a bug in wget that makes it fail on long URLs, or on writing to file names it had derived from long ursl.

See 
wget starts downloading then stops “cannot write to”

This but looks related, for example:
bug #21714: File name too long

The problem may be solved already in the current version of wget - let us know the version you use if it still exists.

Resume mirroring via wget
How can I know that a network card in a server was infected by a virus or not? Are there any methods to check it?
