1. It is OK. MyISAM supports FULLTEXT indexes, InnoDB does not. FULLTEXT is required for search so that table is using MyISAM storage engine.
2. Start from here, but it does not sound like anything reported until now.
Figured out that it hungs in VersionFeed (My machine can gets access to internet trough proxy only).
Think by default "Enable upgrade check" should be off.
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2. After installation site does not answering. On second request to site apache crashing :S
Minor: readme refers to install/ put now its public/install