Newsstandバックグラウンド自動更新時の注意

ダウンロード後、別スレッドで解凍しようとしたが、これは、動かない。
メインスレッドでうごかす必要がある。
unzipは動いていた。
unzipのあと、coreDataを更新するのだが、問題はそちらか？

以下は、ログ。
ちなにみ、ログは、Xcodeのオーガナイザーのデバイスのコンソールで確認できる

Dec  4 10:05:13 unknown SpringBoard[15] <Warning>: NK push throttling has been disabled for 'jp.co.recruit.mtl.jalankantotohoku.universal.1'
Dec  4 10:05:13 unknown JalanMagazine[2281] <Warning>: didReceiveRemoteNotification userInfo:{
	    aps =     {
	        alert = "haro-";
	        "content-available" = 1;
	        sound = default;
	    };
	}
Dec  4 10:05:13 unknown JalanMagazine[2281] <Warning>: this is newsstand
Dec  4 10:05:14 unknown securityd[2313] <Critical>: ks_encrypt_data: failed: -25308
Dec  4 10:05:14 unknown JalanMagazine[2281] <Warning>: Succeeded! Received 2236 bytes of data status:200
Dec  4 10:05:14 unknown JalanMagazine[2281] <Warning>: updateProductsInfo {(
	    "jp.co.recruit.mtl.jalankantotohoku.universal.1.201112",
	    "jp.co.recruit.mtl.jalankantotohoku.universal.1.201112-3",
	    "jp.co.recruit.mtl.jalankantotohoku.universal.1.201101",
	    "jp.co.recruit.mtl.jalankantotohoku.universal.1.201112-2",
	    "jp.co.recruit.mtl.jalankantotohoku.universal.1.1month"
	)}
Dec  4 10:05:14 unknown JalanMagazine[2281] <Warning>: downloadLatestContents autoDownLoad:1
Dec  4 10:05:14 unknown JalanMagazine[2281] <Warning>: downloadContents issue_id:jp.co.recruit.mtl.jalankantotohoku.universal.1.201112-3
Dec  4 10:05:14 unknown JalanMagazine[2281] <Warning>: downloadContents issue_id:jp.co.recruit.mtl.jalankantotohoku.universal.1.201112-3
Dec  4 10:05:14 unknown JalanMagazine[2281] <Warning>: 2012年3月号 is not downloaded. so call downloadContents 
Dec  4 10:05:14 unknown JalanMagazine[2281] <Warning>: url:http://newsstand.hogejp/jalan_contents/sample.zip
Dec  4 10:05:14 unknown JalanMagazine[2281] <Warning>: urlc:<NSURLConnection: 0x10078af0>
Dec  4 10:05:14 unknown wifid[29] <Error>: WiFi:[344653514.734785]: Client itunesstored is background application
Dec  4 10:05:27 unknown profiled[2311] <Notice>: (Note ) profiled: Idled.
Dec  4 10:05:27 unknown profiled[2311] <Notice>: (Note ) profiled: Service stopping.
Dec  4 10:05:41 unknown JalanMagazine[2281] <Warning>: connection didWriteData:23838123 totalBytesWritten:23838123 expectedTotalBytes:23838123
Dec  4 10:05:41 unknown JalanMagazine[2281] <Warning>: connectionDidFinishDownloading destinationURL:/private/var/mobile/Applications/8E11BEDC-64B6-4A51-ACE6-4752A535FFBB/Library/Caches/bgdl-2281-474cc36cbd31f09c.zip
Dec  4 10:05:41 unknown JalanMagazine[2281] <Warning>: make operation. /private/var/mobile/Applications/8E11BEDC-64B6-4A51-ACE6-4752A535FFBB/Library/Caches/bgdl-2281-474cc36cbd31f09c.zip for issue <NKIssue: 0x1e7ad0> -> {name: 'jp.co.recruit.mtl.jalankantotohoku.universal.1.201112-3', date: '2011-12-30 00:00:00 +0000', contentURL: 'file://localhost/var/mobile/Applications/8E11BEDC-64B6-4A51-ACE6-4752A535FFBB/Library/Caches/Newsstand/B1B95902-C071-4FEA-8BDC-9C0F9FD0369F/'} -> assetDownloads: (
	)
Dec  4 10:05:41 unknown JalanMagazine[2281] <Warning>: Beginning operation. /private/var/mobile/Applications/8E11BEDC-64B6-4A51-ACE6-4752A535FFBB/Library/Caches/bgdl-2281-474cc36cbd31f09c.zip for issue <NKIssue: 0x1e7ad0> -> {name: 'jp.co.recruit.mtl.jalankantotohoku.universal.1.201112-3', date: '2011-12-30 00:00:00 +0000', contentURL: 'file://localhost/var/mobile/Applications/8E11BEDC-64B6-4A51-ACE6-4752A535FFBB/Library/Caches/Newsstand/B1B95902-C071-4FEA-8BDC-9C0F9FD0369F/'} -> assetDownloads: (
	)

この後、解凍作業があるのだが、動かない模様。
Beginning operationというコメントは、NSOperationの中なので、もしかしたら、動いているけど、コンソールにでないだけ？