"iTunes unable to load data class" and "iTunes could not back up"

Hello all.
I had an issue and I also have found a work around - but will be glad if this issue will be fixed.
The issue started only in 2013, in Israel.
I get two messages.
When connecting the iPhone to the computer (PC) I get the following message: "iTunes unable to load data class information from sync service". When I sync or try backup (I back up to the computer), I get the following message: "iTunes could not back up the iPhone....because the back up session faild". Backup does not succeed (but sync does).
After many trials I got the following solution:
When I change my time zone from Jerusalem to Cairo (same time zone) backaup is working fine. Moreover - even if I stay in Jerusalem's time zone but check off the "automatic adjust clockfor daylight saving time" - it works fine. The only time I have fault is when I am in Jerusalem time zone with "automatic adjust clockfor daylight saving time" checked ON.
So that's the story.
Any comment, or chance of a fix (the workaround is simple, so maybe this will help other people as well)
Regards,
Eyal

One more elaboration - when I update the timezone - I mean - on the computer (not on the iPhone).
BTW - I think this is connected to the fact that in Israel the daylaight saving time period is not constant
BR
Eyal

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http://support.apple.com/kb/HT1386
Apple - Support - iPad - Syncing
http://www.apple.com/support/ipad/syncing/
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"iTunes unable to load data class" and "iTunes could not back up"

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