Hyperlinks being changed
 

Hi,
In Excel 2007 I have some cells with hyperlinks in e.g.
http://blah.company.com/folder/this.xls
I save the doc into a library in sharepoint 2007 in compatability mode.
When I check it out, then pick "edit in Excel", the hyperlinks have turned
into "file://\\\My Documents\folder\this.xls, which of course doesn't exist.

This is driving me nuts!
Any help appreciated.