All, 

I just started seeing warnings like the following:

---
pciide0:0:0: lost interrupt
        type: ata tc_bcount: 65536 tc_skip: 0
pciide0:0:0: bus-master DMA error: missing interrupt, status=0x21
pciide0:0:0: device timeout, c_bcount=65536, c_skip0
wd0e: device timeout reading fsbn 3115824 of 3115824-3115951 (wd0 bn 15744048; cn 15619 tn 1 sn 33), retrying
wd0: soft error (corrected)
---

I just saw a burst of 7 of these on my console.  

This machine has been running about 36 hours since I ran a fresh install 
of NetBSD 1.5.2 on a new disk.  These are the only unusual messages I've 
seen from this system.  Since the last part of the message reports the soft 
error was corrected, I hope this doesn't mean my system is seriously failing.

Advice on where to start investigating?

Thanks.

Here are all the messages:
---
pciide0:0:0: lost interrupt
        type: ata tc_bcount: 65536 tc_skip: 0
pciide0:0:0: bus-master DMA error: missing interrupt, status=0x21
pciide0:0:0: device timeout, c_bcount=65536, c_skip0
wd0e: device timeout reading fsbn 3115824 of 3115824-3115951 (wd0 bn 15744048; cn 15619 tn 1 sn 33), retrying
wd0: soft error (corrected)
pciide0:0:0: lost interrupt
        type: ata tc_bcount: 65536 tc_skip: 0
pciide0:0:0: bus-master DMA error: missing interrupt, status=0x20
pciide0:0:0: device timeout, c_bcount=65536, c_skip0
wd0e: device timeout reading fsbn 26838832 of 26838832-26838959 (wd0 bn 39467056; cn 39153 tn 13 sn 13), retrying
wd0: soft error (corrected)
pciide0:0:0: lost interrupt
        type: ata tc_bcount: 57344 tc_skip: 0
pciide0:0:0: bus-master DMA error: missing interrupt, status=0x20
pciide0:0:0: device timeout, c_bcount=57344, c_skip0
wd0e: device timeout reading fsbn 5968384 of 5968384-5968495 (wd0 bn 18596608; cn 18449 tn 0 sn 16), retrying
wd0: soft error (corrected)
pciide0:0:0: lost interrupt
        type: ata tc_bcount: 65536 tc_skip: 0
pciide0:0:0: bus-master DMA error: missing interrupt, status=0x20
pciide0:0:0: device timeout, c_bcount=65536, c_skip0
wd0e: device timeout reading fsbn 6285552 of 6285552-6285679 (wd0 bn 18913776; cn 18763 tn 10 sn 42), retrying
wd0: soft error (corrected)
pciide0:0:0: lost interrupt
        type: ata tc_bcount: 65536 tc_skip: 0
pciide0:0:0: bus-master DMA error: missing interrupt, status=0x21
pciide0:0:0: device timeout, c_bcount=65536, c_skip0
wd0e: device timeout reading fsbn 5397248 of 5397248-5397375 (wd0 bn 18025472; cn 17882 tn 6 sn 38), retrying
wd0: soft error (corrected)
pciide0:0:0: lost interrupt
        type: ata tc_bcount: 65536 tc_skip: 0
pciide0:0:0: bus-master DMA error: missing interrupt, status=0x20
pciide0:0:0: device timeout, c_bcount=65536, c_skip0
wd0e: device timeout reading fsbn 9760912 of 9760912-9761039 (wd0 bn 22389136; cn 22211 tn 7 sn 7), retrying
wd0: soft error (corrected)
pciide0:0:0: lost interrupt
        type: ata tc_bcount: 65536 tc_skip: 0
pciide0:0:0: bus-master DMA error: missing interrupt, status=0x20
pciide0:0:0: device timeout, c_bcount=65536, c_skip0
wd0e: device timeout reading fsbn 19209872 of 19209872-19209999 (wd0 bn 31838096; cn 31585 tn 6 sn 38), retrying
wd0: soft error (corrected)

---
SAR
sar@computer.org