OOo_1.1.0_LinuxIntel_sdk.tar.gz if detected by mime-sniffing as  "TeX font
metrics", but it's a tar.gz file.

more details:
the file is the openoffice sdk, you can get it here:
http://www.openoffice.org/dev_docs/source/sdk/index.html

when i click on it with nautilus-2.5.8, shared-mime-info-0.13,
i get:

Cannot open OOo_1.1.0_LinuxIntel_sdk.tar.gz.The
filename"OOo_1.1.0_LinuxIntel_sdk.tar.gz" indicates that this file is of
type"Tar archive (Gzip-compressed)". The contents of the file indicate thatthe
file is of type "TeX font metrics". If you open this file, the filemight present
a security risk to your system.

which is incorrect.