I do have 2 burrows, but one is ready for emergency evacuation and the other is simply a marker to switch down the 91 Z-Levels to my cavern network thing. I have not assigned anyone to them.
Here an extract from the gamelog.txt:
Solon Thortithzulban, Metalsmith cancels Store Item in Stockpile: Item inaccessible.
The weather has cleared.
Solon Thortithzulban, Metalsmith cancels Store Item in Stockpile: Item inaccessible.
Nomal Sibrekneb‚l, militia captain cancels Store Item in Stockpile: Item inaccessible.
x2
B‰mbul Gebonol, Miner cancels Store Item in Stockpile: Item inaccessible.
Nomal Sibrekneb‚l, militia captain cancels Store Item in Stockpile: Item inaccessible.
x2
Kulet Logemlisat, Peasant cancels Store Item in Stockpile: Item inaccessible.
Kulet Logemlisat, Peasant cancels Store Item in Stockpile: Item inaccessible.
x2
Aban Tekkudl–rit, militia commander cancels Store Item in Stockpile: Item inaccessible.
Vucar Mosuszoz, sheriff cancels Store Item in Stockpile: Item inaccessible.
Aban Tekkudl–rit, militia commander cancels Store Item in Stockpile: Item inaccessible.
x2
—shrir Zulbankikrost, Miner cancels Store Item in Stockpile: Item inaccessible.
x2
Oddom SokanzuntŒr, Miner cancels Store Item in Stockpile: Item inaccessible.
Aban Tekkudl–rit, militia commander cancels Store Item in Stockpile: Item inaccessible.
x2
Tun Ardes—shrir, Miner cancels Store Item in Stockpile: Item inaccessible.
x2
Oddom SokanzuntŒr, Miner cancels Store Item in Stockpile: Item inaccessible.
Sarvesh OkolŠrith, Stoneworker cancels Store Item in Stockpile: Item inaccessible.
Sarvesh OkolŠrith, Stoneworker cancels Store Item in Stockpile: Item inaccessible.
x2
Udil Onol‹lon, broker cancels Store Item in Stockpile: Item inaccessible.
As you can see it's fairly repetitive, and includes a fair few dwarves. The problem is that Item isn't defined anywhere.