iStumbler is an easy way to scan for information about the Wi-Fi environment around you, as well as see available Bluetooth devices, and what Bonjour services are available on the local network. The latest version, release 99, works only with Mac OS X 10.6.2 or later, adds support for the 5 GHz band used by 802.11a and 802.11n, and takes advantage of the coordinate-based location feature in Snow Leopard to allow GPS-like tracking as the application scans. (Free, donation requested, 1.1 MB)
Time for a Fetch Refresh?
In the Fetch FTP client, if you see a time stamp like "As of 6/19/10 2:29 PM" above the file list, that means that Fetch is re-using a file list it downloaded earlier. Click the swooshing-arrow refresh button (located beside the time stamp) to refresh the list.
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