[Zope] Which method to generate IDs for objects?

[Juergen R. Plasser / HEXAGON]

Hi!

I am just experimenting with ZClasses and I ran into the following problem: 
when I instantiate an object this object needs an unique ID. There are some 
ways to generate this. First of all I thought of the system time as ID, but 
this can make problems, even though not with high probability. Does anybody 
out there have a better solution, I think of an ID generation like in a 
sequence: object_id_001, object_id_002, ... but how can I determine the 
last object ID?

Other (better, more simple) ideas?

Juergen