When I download (some) word documents from my university intranet onto my laptop (saved to my hard drive), they only work whilst I'm still connected to the intranet. If I turn off my wireless card, or if I try to open them at home connected to my home network, Word crashes immediately with no error message other than "Word has stopped working". Really weird thing is, the documents work fine if I copy them to my wife's laptop (running word 2003). Once I've crashed Word, re-connecting to the uni intranet is not enough to open the document and I need to reboot my machine as well. Then all is fine. Also, this only happens with some documents downloaded this way. Others work fine.
I've tried copying the text into a new document using my wife's laptop and the new doc has the same problem. Really can't understand what my connection to the internet has to do with opening a word doc saved on my hard disk, especially when the same doc works fine on other computers without the need for a connection to this specific intranet. I've even tried a full uninstall and reinstall of Office and the same thing is happening.
Any help or ideas would be much appreciated. If it makes any difference I'm running Vista 64-bit.