Lion Recovery (Command-R) - What Lion version do you get?
When booting from the Lion Recovery partition using Cmd-R, one of the options is to download and reinstall OS 10.7, Lion. The entire Lion installer is then downloaded and the installation begins.
The question is, when that's done, what version of Lion has been installed? Is it the earliest: 10.7.0, the latest, 10.7.5 as of this writing, or whatever version is currently installed on your Mac?
While Lion was still the current OS, after an update was released, the version of the Lion installer available for purchase or redownload from the Mac App Store was the updated version, not the original one. Even after Mountain Lion was released, while Lion was still available on the Purchases tab (with the Option Key down), the updated version, including 10.7.5, of the "Install Mac OS X Lion.app" was what was delivered and they each had different version numbers.
The question is relevant for posters on the endless "time machine slow in 10.7.5" thread because using Recovery to revert to an earlier version of Lion could be a quick solution to the Time Machine/Spotlight conflict, as long as Recovery didn't just install 10.7.5 all over again.
Mac Pro, Mac OS X (10.7.4), 5,1 6-core 24 GB 5870 27" LED ACD