ubuntuone is taking too much time to do SERVER_RESCAN

Binary package hint: ubuntuone-client

ubuntuone is taking too much time to do SERVER_RESCAN you can see in my log files.
Is that normal ?
Thank you ?

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: ubuntuone-client 1.1.91-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-19.28-generic 2.6.32.10+drm33.1
Uname: Linux 2.6.32-19-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Mon Apr 5 14:42:48 2010
PackageArchitecture: all
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
 LANG=pt_BR.UTF-8
 LANGUAGE=pt_BR:pt:en
SourcePackage: ubuntuone-client
UbuntuOneOAuthLoginLog:
 2010-03-30 17:54:41,332:332.540988922 ubuntuone-login Starting Ubuntu One login manager version 1.1.4
 2010-03-31 20:52:46,484:484.819889069 ubuntuone-login Starting Ubuntu One login manager version 1.1.4
 2010-04-01 19:22:26,753:753.856897354 ubuntuone-login Starting Ubuntu One login manager version 1.1.90
 2010-04-02 11:36:24,950:950.781106949 ubuntuone-login Starting Ubuntu One login manager version 1.1.90
 2010-04-03 15:51:49,099:99.3759632111 ubuntuone-login Starting Ubuntu One login manager version 1.1.91
UbuntuOneSyncdaemonConfig:
 [bandwidth_throttling]
 read_limit = 2097152
 write_limit = 2097152
 on = False
UbuntuOneSyncdaemonExceptionsLog:
 2010-04-05 12:02:51,441 - ubuntuone.SyncDaemon.ActionQueue - ERROR - Move share:'a770102c-377f-443d-bd84-9667851a8dff' node:marker:9e454421-17ad-48ce-9a3e-c1cdd421bc3f Move(new_name="u'undo.branch'", share_id="'a770102c-377f-443d-bd84-9667851a8dff'", node_id='marker:9e454421-17ad-48ce-9a3e-c1cdd421bc3f', new_parent_id="'82702f33-852f-457f-af06-24a2c9cdf250'", old_parent_id="'82702f33-852f-457f-af06-24a2c9cdf250'") failure INTERNAL_ERROR
 2010-04-05 13:31:46,552 - ubuntuone.SyncDaemon.ActionQueue - ERROR - Move share:'a770102c-377f-443d-bd84-9667851a8dff' node:marker:17722a32-b945-4fd2-a46e-3d9fae77cec6 Move(new_name="u'dirstate'", share_id="'a770102c-377f-443d-bd84-9667851a8dff'", node_id='marker:17722a32-b945-4fd2-a46e-3d9fae77cec6', new_parent_id="'82702f33-852f-457f-af06-24a2c9cdf250'", old_parent_id="'82702f33-852f-457f-af06-24a2c9cdf250'") failure INTERNAL_ERROR
 2010-04-05 14:24:25,970 - ubuntuone.SyncDaemon.ActionQueue - ERROR - Move share:'a770102c-377f-443d-bd84-9667851a8dff' node:marker:ea006298-e7cf-48a2-96fe-67e432d0eabf Move(new_name="u'undo'", share_id="'a770102c-377f-443d-bd84-9667851a8dff'", node_id='marker:ea006298-e7cf-48a2-96fe-67e432d0eabf', new_parent_id="'1d0bd1f4-089f-4a7c-a6df-09f26eb6602a'", old_parent_id="'1d0bd1f4-089f-4a7c-a6df-09f26eb6602a'") failure INTERNAL_ERROR