I'm running Zimbra Desktop 7.01 Under Linux Mint 9 32bit.
I keep getting sync errors, and somtimes have the software not want to Launch the Desktop, and keeps jumping back to the Setup (My Accounts) screen. The only solution is to press reset, and then It seems to work. But I have noticed that no folders get syncd.
This is the first time I have found an error message that hopefully helps.

CRLF expected at end of chunk: 51/65 Exception:

com.zimbra.common.service.ServiceException: system failure: TarInputStream
ExceptionId:sync-mbox-snaylor@gardenorganic.org.uk:1307735960944:ccdf85a 3221cefdf
Code:service.FAILURE
at com.zimbra.common.service.ServiceException.FAILURE (ServiceException.java:248)
at com.zimbra.cs.mailbox.InitialSync.syncMessagesAsTg z(InitialSync.java:1037)
at com.zimbra.cs.mailbox.InitialSync.syncMessages(Ini tialSync.java:939)
at com.zimbra.cs.mailbox.InitialSync.syncMessagelikeI tems(InitialSync.java:399)
at com.zimbra.cs.mailbox.InitialSync.syncMessagelikeI tems(InitialSync.java:355)
at com.zimbra.cs.mailbox.InitialSync.initialFolderSyn c(InitialSync.java:255)
at com.zimbra.cs.mailbox.InitialSync.prioritySync(Ini tialSync.java:362)
at com.zimbra.cs.mailbox.InitialSync.initialFolderSyn c(InitialSync.java:290)
at com.zimbra.cs.mailbox.InitialSync.initialFolderSyn c(InitialSync.java:301)
at com.zimbra.cs.mailbox.InitialSync.resume(InitialSy nc.java:202)
at com.zimbra.cs.mailbox.InitialSync.resume(InitialSy nc.java:186)
at com.zimbra.cs.mailbox.MailboxSync.sync(MailboxSync .java:190)
at com.zimbra.cs.mailbox.ZcsMailbox.sync(ZcsMailbox.j ava:121)
at com.zimbra.cs.mailbox.ZcsMailbox.syncOnTimer(ZcsMa ilbox.java:102)
at com.zimbra.cs.mailbox.SyncMailbox$1.run(SyncMailbo x.java:278)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)
Caused by: java.io.IOException: CRLF expected at end of chunk: 51/65
at org.apache.commons.httpclient.ChunkedInputStream.r eadCRLF(ChunkedInputStream.java:207)
at org.apache.commons.httpclient.ChunkedInputStream.n extChunk(ChunkedInputStream.java:219)
at org.apache.commons.httpclient.ChunkedInputStream.r ead(ChunkedInputStream.java:176)
at java.io.FilterInputStream.read(Unknown Source)
at org.apache.commons.httpclient.AutoCloseInputStream .read(AutoCloseInputStream.java:108)
at java.io.FilterInputStream.read(Unknown Source)
at java.util.zip.InflaterInputStream.fill(Unknown Source)
at java.util.zip.InflaterInputStream.read(Unknown Source)
at java.util.zip.GZIPInputStream.read(Unknown Source)
at com.zimbra.common.util.tar.TarBuffer.readBlock(Tar Buffer.java:257)
at com.zimbra.common.util.tar.TarBuffer.readRecord(Ta rBuffer.java:223)
at com.zimbra.common.util.tar.TarInputStream.read(Tar InputStream.java:349)
at com.zimbra.common.util.tar.TarInputStream.skip(Tar InputStream.java:173)
at com.zimbra.common.util.tar.TarInputStream.getNextE ntry(TarInputStream.java:235)
at com.zimbra.cs.mailbox.InitialSync.syncMessagesAsTg z(InitialSync.java:998)
... 15 more


I will next try and delete and re-create this account, to see if that helps...