SQL Query over I-STAR

What gives here? I have two systems each running Informix OnLine and Informix Star (5.0). The following query runs just fine when executed locally on either system: select * from rate where counter_id = 61 and timestamp > (current year to minute - interval(30) minute to minute) (Note the two systems have the same schema). Timestamp is of type "datetime year to second". Now I try the same query from Machine A referencing the rate table on Machine B using a synonym: select * from remote_rate where counter_id = 61 and timestamp > (current year to minute - interval(30) minute to minute) and I get: 1261: Too many digits in the first field of datetime or interval. Huh? If I remove the "timestamp" search condition the query does indeed work so the synonym and Informix STAR appear to be OK. And the timestamp condition works fine as long as it is issued LOCALLY. My only other idea was to check the clocks on the two systems and I verified that they are synchronized down to the second (we run xntpd). So what's my problem? Ken Miles HP Vancouver Division kenm@vcd.hp.com