Hi jmhayward,
As I understand things Safari 5.x is no longer supported by Apple and is, at this point, a fairly old release.
I do appreciate that more recent versions may not be available for Windows and that Apple may effectively have discontinued support for that platform – but perhaps you could switch to a browser that continues to benefit from regular maintenance and support?
Unfortunately we can’t guarantee support for every browser and this is particularly so for browsers where even the vendor has ceased to maintain and support them.