Wireless netboot since 7.5.2

Greetings,
One of the network environments I manage utilizes netboot, including several macbook airs that wireless netboot.
They're a pretty apple only envrionment, and ever since updating their Time Capsule to firmware 7.5.2 the wireless netboot no longer works. The wired netboot seems to work fine, however.
Additionally, it has an airport express re-broadcasting in an otherwise remote room, and it is hooked up to a ethernet switch effectively creating a wired network in that room that is wirelessly connected to the main network. I was able to netboot off that as well running 7.4.2, but not 7.5.2.
Has anyone else run into this scenario, or are able to reproduce it? I downgraded it back to 7.4.2 and it seems to be working fine now.

7.5.2 is seemingly bug ridden as I have seen with many Airport updates in the past.
This seems to be one place where Apple is especially poor. For the cost their routers leave much lacking and the firmware updates in need of much better quality control/testing.
I downgraded to 7.4.2 as well after my VPN passthrough stopped working on a Airport Extreme 802.11n router (Single-band). 7.5.2 also caused a MacBook and MacBook Pro NOT to connect to the closed network after sleeping. Users would have to ‘Join another network’ then enter the SSID and security level and passcode (which are already stored in Keychain) because they’re unrecognized by the router with 7.5.2. Downgraded and they automagically (couldn’t resist) started working again.
Did you seen any of these issues?

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