Sync daemon needs uses too much memory

Binary package hint: ubuntuone-client

I'm still waiting for my sync of very many files to fill my 20GB storage to test bug #744383 yet next to addressing the issue described in Bug #761578 there is still another issue. The sync daemon is using 1,4GB of resident memory and it seems that it is not making any sync progress:

Mem: 4054512k total, 3963696k used, 90816k free, 80828k buffers
  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2646 ayers 20 0 1639m 1.4g 3464 S 0 35.8 151:27.72 ubuntuone-syncd

I'm testing: 1.4.6-0ubuntu3 from -proposed but this issue was also observed with the with the version in -updates.
ubuntuone-client:
  Installiert: 1.4.6-0ubuntu3
  Kandidat: 1.4.6-0ubuntu3
  Versionstabelle:
 *** 1.4.6-0ubuntu3 0
        400 http://at.archive.ubuntu.com/ubuntu/ maverick-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     1.4.6-0ubuntu2 0
        900 http://at.archive.ubuntu.com/ubuntu/ maverick-updates/main amd64 Packages
     1.4.4.1-0ubuntu1 0
        500 http://at.archive.ubuntu.com/ubuntu/ maverick/main amd64 Packages

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: ubuntuone-client 1.4.6-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.35-28.50-generic 2.6.35.11
Uname: Linux 2.6.35-28-generic x86_64
Architecture: amd64
Date: Sat Apr 16 08:53:14 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, user)
 LANG=de_AT.utf8
 SHELL=/bin/bash
SourcePackage: ubuntuone-client
UbuntuOneSyncdaemonExceptionsLog:

UbuntuOneUserSyncdaemonConfig:
 [bandwidth_throttling]
 read_limit = 2097152
 write_limit = 2097152
 on = False