Dear Vlad,
I'm glad you spotted the problem.
Starting from Visual C++ 2005, time_t is defined as a 64 bit integer. In order to go back to time_t defined as 32 bit integer it is enough to use the following define
_USE_32BIT_TIME_T
at compile time.
I know about this macro but the problem still exists with binaries already compiled with time_t as 64bits. Si in any case all time_t references need to be casted to 64 por 32 bits explicitly. So basically all our changes are just explicit casts to 64bits.