So, I downloaded the new version of LibreOffice 4.1.0 from the Document Foundation site (http://www.libreoffice.org/download), then I uninstalled the old version and installed the new one, then I went to fire it up, opened the "About" menu item and got the following two NIS detections:
Filename: unicodedata.pyd
Threat name: Suspicious.Cloud.7.F
Full Path: c:\program files (x86)\libreoffice 4\program\python-core-3.3.0\lib\unicodedata.pyd
Filename: cuilo.dll
Threat name: Suspicious.Cloud.7.F
Full Path: c:\program files (x86)\libreoffice 4\program\cuilo.dll
Both files were quarantined and removed by NIS and now unfortunately I cannot open "Options" and "About" in LibreOffice. It's pretty clear to me that this is a false positive since I grabbed it from the authors' own site. Please let me know if it's okay to restore these two files. Thanks.