Help please! HDR 2ry; oncheck -ce: "Missing pages"

Hi all, I've got a small problem (small so far ;-)) which I'd be grateful for any advice with! My configuration is IDS 9.30.UC3 in an HDR setup, on Sparc/Solaris9. The primary server appears to be in rude health - no evidence of any problems, and all the usual "oncheck" consistency checks show nothing to worry about. That's why it's only a small problem at the moment :-). However, the secondary is showing some problems. Catalog tables (oncheck -cc) and data pages (-cD xxx) all check out fine, but the extents check (-ce) is showing "missing pages": --------------- snip here Validating extents for Space 'tempdbd1' ... Chunk Pathname Size Used Free 2 /usr/informix/disk/tempdbs/tempdbs1 1000000 36757 963243 ERROR: Missing pages between 53 and 36757 Validating extents for Space 'tempdbd2' ... Chunk Pathname Size Used Free 3 /usr/informix/disk/tempdbs/tempdbs2 1000000 40453 959547 ERROR: Missing pages between 53 and 40453 Validating extents for Space 'datadbs1' ... Chunk Pathname Size Used Free 10 /usr/informix/disk/primary/datadbs1_b 1000000 125246 874754 ERROR: Missing pages between 482792 and 482800 --------------- end of snip (I've only shown the chunks with the errors.) So my question is, before I rebuild the secondary from a level0 dump of the primary, I just want to check that these sorts of errors aren't some sort of quirk of replication but are a sign that I really do need to rebuild the server. I'd also love to know what a "missing pages" error actually means! Where did it lose them <grin>? (The chunks, by the way, are Informix mirrored disksuite partitions, and the disksuite partitions are mirrored themselves. So each chunk is on 4 disks - you'd think if Informix looked hard enough it could find the pages it thinks are missing ;-).) Thanks in advance for any help, Tim.