[ZODB-Dev] funky _p_mtime values

[Thomas Clement Mogensen]

Dear ZODB-dev list,

I have a very strange problem with my zodb that I'm hoping you can  
help me with.

Within the last few days something very strange has happened: All  
newly created or modified objects get a _p_mtime that is clearly  
incorrect and too big for DataTime to consider it a valid timestamp.  
(ie. int(obj._p_mtime) returns a long).

Values I get for _p_mtime on these newly altered objects are  
something like:
8078347503.108635
with only the last few decimals differing among all affected objects.
Objects changed at the same time appear to get the same stamp.

My site is stock Zope-2.9.7 with Plone 2.5.X and a slew of other  
products. It's zodb is approaching 3GB of mainly text, so it has a  
lot of objects!

Only the zmi seems to look at _p_mtime, so my (production!) frontend  
acts normal. But I'm thinking there also might be some problems with  
caching? Plus.. unexplained, strange behaviour makes me very nervous!

Any help or thoughts would be appreciated! - Please ask for more  
specifics!
Thanks in advance
Thomas Clement Mogensen