From DBSight Full-Text Search Engine/Platform Wiki
Does DBSight work with Fedora?
Yes, but not with the default GNU Java runtime ("libgcj"). You need to download Sun's JDK. The reason is not determined yet, but it's not particular to DBSight.
What to do with UNIX timestamp?
Unix timestamp stores number of epcho seconds, instead of common number of milliseconds. It's used often in PHP applications. To use it as Date, you can use MySql function ROM_UNIXTIME(unix_timestamp_field).
What if I want to index a field as two index types?
You can select the field twice! Of course, you can choose not to store one of the field to save space.