Query on SI_UPDATE_TS issues

Question

I'm trying to do a wildcard search on SI_UPDATE_TS, but a query using wildcards returns no results.  On fields like SI_CREATION_TIME, I can perform a query such as:
SI_CREATION_TIME = '2007.11.%'
and it will return all objects for November. For SI_UPDATE_TS, I have to use a combination or greater than and less than.  Does anyone know of any way to use the wildcard?
As an aside, if I do this query:
select si_id, si_update_ts, si_creation_time from ci_infoobjects where SI_UPDATE_TS BETWEEN '2007.11.1.00.00.00' and '2007.11.30.00.00.00'
my CMS restarts!
Anyone have any thoughts on this?

Answer 1

+2 for suggesting a CMS trace.
>> I'm assuming you're not opening 2000 reports here.
That's exactly what I'm doing, actually.  2000 Desktop Intelligence reports are being queried for via iinfostore.query("select top 2000 ...") - and upon doing so, result in an updated SI_UPDATE_TS as of the time the object was queried.
This is actually happening with both Desktop Intelligence and Web Intelligence report types.  In fact, it may even be happening with Universe files as well.  Someone else seemed to have encountered this at : http://www.forumtopics.com/busobj/viewtopic.php?t=167314 . I will pursue a trace and see what comes of it.
Thanks for the insights -
Atul