Hello,
I am using the Zimbra Admin GUI on the Zimbra server to restore an account.
I choose last available backup and prefix it with restored_. I've also tried picking an earlier date to no avail.
The resulting window finishes but it is blank. The restored account is created but it is empty.

The account I am trying to restore is 3GB+. When I restore another smaller account (300mb's) it works fine. Other than the size, I am not aware of any other differences between the two accounts.

Here are some entries in mailbox.log regarding the failed restore:
2012-08-08 17:29:44,003 INFO [btpool0-8259://localhost/service/soap/BatchRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;oip=yy.yyy.yyy.yyy;ua=zclient/6.0.12_GA_2883;] soap - BatchRequest
2012-08-08 17:29:44,003 INFO [btpool0-8259://localhost/service/soap/BatchRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;oip=yy.yyy.yyy.yyy;ua=zclient/6.0.12_GA_2883;] soap - (batch) GetInfoRequest
2012-08-08 17:29:44,003 INFO [btpool0-8259://localhost/service/soap/BatchRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;oip=yy.yyy.yyy.yyy;ua=zclient/6.0.12_GA_2883;] misc - delegated access: doc=GetInfo, delegating account=admin@xxxxxx.edu, authenticated account=restored_user@xxxxxx.edu, target account=restored_user@xxxxxx.edu
2012-08-08 17:29:44,600 INFO [btpool0-8259://localhost/service/soap/BatchRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;oip=yy.yyy.yyy.yyy;ua=zclient/6.0.12_GA_2883;] soap - (batch) SearchRequest
2012-08-08 17:29:44,600 INFO [btpool0-8259://localhost/service/soap/BatchRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;oip=yy.yyy.yyy.yyy;ua=zclient/6.0.12_GA_2883;] misc - delegated access: doc=Search, delegating account=admin@xxxxxx.edu, authenticated account=restored_user@xxxxxx.edu, target account=restored_user@xxxxxx.edu
2012-08-08 17:29:45,358 INFO [btpool0-8244://zimbra.xxxxxx.edu/service/soap/BatchRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;ip=yy.yyy.yyy.yyy;ua=ZimbraWebClient - FF3.0 (Linux)/6.0.12_GA_2883;] soap - BatchRequest
2012-08-08 17:29:45,358 INFO [btpool0-8244://zimbra.xxxxxx.edu/service/soap/BatchRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;ip=yy.yyy.yyy.yyy;ua=ZimbraWebClient - FF3.0 (Linux)/6.0.12_GA_2883;] soap - (batch) GetMailboxMetadataRequest
2012-08-08 17:29:45,358 INFO [btpool0-8244://zimbra.xxxxxx.edu/service/soap/BatchRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;ip=yy.yyy.yyy.yyy;ua=ZimbraWebClient - FF3.0 (Linux)/6.0.12_GA_2883;] misc - delegated access: doc=GetMailboxMetadata, delegating account=admin@xxxxxx.edu, authenticated account=restored_user@xxxxxx.edu, target account=restored_user@xxxxxx.edu
2012-08-08 17:29:48,125 INFO [btpool0-8244://zimbra.xxxxxx.edu/service/soap/IMGatewayListRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;ip=yy.yyy.yyy.yyy;ua=ZimbraWebClient - FF3.0 (Linux)/6.0.12_GA_2883;] soap - IMGatewayListRequest
2012-08-08 17:29:48,125 INFO [btpool0-8244://zimbra.xxxxxx.edu/service/soap/IMGatewayListRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;ip=yy.yyy.yyy.yyy;ua=ZimbraWebClient - FF3.0 (Linux)/6.0.12_GA_2883;] misc - delegated access: doc=IMGatewayList, delegating account=admin@xxxxxx.edu, authenticated account=restored_user@xxxxxx.edu, target account=restored_user@xxxxxx.edu
2012-08-08 17:29:48,125 INFO [btpool0-8244://zimbra.xxxxxx.edu/service/soap/IMGatewayListRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;ip=yy.yyy.yyy.yyy;ua=ZimbraWebClient - FF3.0 (Linux)/6.0.12_GA_2883;] im - Creating IMPersona IMPersona(restored_user@xxxxxx.edu ONLINE pri=0 st=null) at addr 1947106425 mbox at addr 1661871989
2012-08-08 17:29:48,135 INFO [btpool0-8244://zimbra.xxxxxx.edu/service/soap/IMGetRosterRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;ip=yy.yyy.yyy.yyy;ua=ZimbraWebClient - FF3.0 (Linux)/6.0.12_GA_2883;] soap - IMGetRosterRequest
2012-08-08 17:29:48,135 INFO [btpool0-8244://zimbra.xxxxxx.edu/service/soap/IMGetRosterRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;ip=yy.yyy.yyy.yyy;ua=ZimbraWebClient - FF3.0 (Linux)/6.0.12_GA_2883;] misc - delegated access: doc=IMGetRoster, delegating account=admin@xxxxxx.edu, authenticated account=restored_user@xxxxxx.edu, target account=restored_user@xxxxxx.edu
<iq type="result" id="getPrivLists-0" to="restored_user@xxxxxx.edu/zcs">
<iq type="result" id="getPrivLists-1" to="restored_user@xxxxxx.edu/zcs">
2012-08-08 17:29:52,300 INFO [btpool0-8244://zimbra.xxxxxx.edu/service/soap/GetMiniCalRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;ip=yy.yyy.yyy.yyy;ua=ZimbraWebClient - FF3.0 (Linux)/6.0.12_GA_2883;] soap - GetMiniCalRequest
2012-08-08 17:29:52,300 INFO [btpool0-8244://zimbra.xxxxxx.edu/service/soap/GetMiniCalRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;ip=yy.yyy.yyy.yyy;ua=ZimbraWebClient - FF3.0 (Linux)/6.0.12_GA_2883;] misc - delegated access: doc=GetMiniCal, delegating account=admin@xxxxxx.edu, authenticated account=restored_user@xxxxxx.edu, target account=restored_user@xxxxxx.edu
2012-08-08 17:29:52,327 INFO [btpool0-8244://zimbra.xxxxxx.edu/service/soap/GetMiniCalRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;ip=yy.yyy.yyy.yyy;ua=ZimbraWebClient - FF3.0 (Linux)/6.0.12_GA_2883;] im - IMRosterNotification:
2012-08-08 17:29:52,829 INFO [btpool0-8244://zimbra.xxxxxx.edu/service/soap/NoOpRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;ip=yy.yyy.yyy.yyy;ua=ZimbraWebClient - FF3.0 (Linux)/6.0.12_GA_2883;] soap - NoOpRequest
2012-08-08 17:29:52,829 INFO [btpool0-8244://zimbra.xxxxxx.edu/service/soap/NoOpRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;ip=yy.yyy.yyy.yyy;ua=ZimbraWebClient - FF3.0 (Linux)/6.0.12_GA_2883;] misc - delegated access: doc=NoOp, delegating account=admin@xxxxxx.edu, authenticated account=restored_user@xxxxxx.edu, target account=restored_user@xxxxxx.edu
2012-08-08 17:29:54,532 INFO [btpool0-8244://zimbra.xxxxxx.edu/service/soap/EndSessionRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;ip=yy.yyy.yyy.yyy;ua=ZimbraWebClient - FF3.0 (Linux)/6.0.12_GA_2883;] soap - EndSessionRequest
2012-08-08 17:29:54,532 INFO [btpool0-8244://zimbra.xxxxxx.edu/service/soap/EndSessionRequest] [name=restored_user@xxxxxx.edu;aname=admin@xxxxxx.e du;mid=1056;ip=yy.yyy.yyy.yyy;ua=ZimbraWebClient - FF3.0 (Linux)/6.0.12_GA_2883;] misc - delegated access: doc=EndSession, delegating account=admin@xxxxxx.edu, authenticated account=restored_user@xxxxxx.edu, target account=restored_user@xxxxxx.edu
2012-08-08 17:30:14,500 INFO [btpool0-8265://localhost:7071/service/admin/soap/DeleteAccountRequest] [name=admin@xxxxxx.edu;mid=2;ip=127.0.0.1;ua=Zimbra WebClient - FF3.0 (Linux);] misc - delegated access: doc=DeleteAccount, authenticated account=admin@xxxxxx.edu, target account=restored_user@xxxxxx.edu
com.zimbra.common.service.ServiceException: permission denied: can not access account restored_user@xxxxxx.edu

Thanks for any thoughts,
Hylon