[kronolith] unserialize() problem in a clean installation

[Guy Morton]

Went and tested the kronolith on a different PC, and lo and behold the 
problem didn't appear. Went back to my PC, shut down firefox, opened it 
again and logged in...kronolith now working fine.

ARGHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH!!!!!!!!!!!!!!!

I guess the error was either caching related (d'oh) or session related.

Hopefully having posted this here may help someone else in future (just 
looking for the silver lining in having spent about 3 hours on this today!).

Sorry for the noise.

Guy