[Apt-proxy-users] apt: Dynamic MMap ran out of room

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I run ap version 1 from Debian stable, and now i try to upgrade to testing.
After 'updating' to the new sources list from aptitude ('u') the package lists 
seem to have been downloaded
into the apt-proxy cache properly. For example:
<<
/home mi: ls -l /var/cache/apt-proxy/debian/dists/testing/main/binary-i386/
-rw-r--r--    1 aptproxy nogroup      2,8M 2004-04-30 21:00 Packages.gz
-rw-r--r--    1 aptproxy nogroup        81 2004-04-30 21:18 Release
 >>

But when i start aptitude and it finishs loading the apt cache, there's this 
error message:
<<
Apt errors
E: Dynamic MMap ran out of room
E: Error occured while processing tqsllib0 (NewVersion1)
E: Problem with MergeList 
/var/lib/apt/lists/localhost:9999_debian_dists_testing_main_binary-i386_Packages
E: The package lists or status file could not be parsed or opened.
 >>

There's no package list available, afterwards.
When i request a new (offline) upgrade, it says
<<
Ouch!  Got SIGSEGV, dying..
Segmentation fault
 >>

The same occurs with unstable.
Updating the package list still works for stable (woody).

The package lists for testing and unstable (main) are quite large (> 2,5 MB) 
compared to stable.
However i don't understand what's going on.

This box has 256 MB RAM and a lot of swap. It runs a kernel 2.4.5 which never 
showed any memory problem.

Any idea will be greatly appreciated !

-- mi.

-------------------------------------  Appendix I:  apt-proxy.conf
<<
# Change this path if you do not want to keep your cache under var
APT_PROXY_CACHE=/var/cache/apt-proxy

# ------------- Debian Main
# deb http://APTPROXY:9999/debian stable main contrib non-free
add_backend /debian/					\
	$APT_PROXY_CACHE/debian/			\
	http://ftp.de.debian.org/debian/		\

# ------------- Debian Non-US
add_backend /non-US/					\
	$APT_PROXY_CACHE/non-US/			\
	http://ftp.de.debian.org/debian-non-US/		

# ------------- Debian Security
add_backend /security/					\
	$APT_PROXY_CACHE/security/			\
	http://security.debian.org/			

# ------------- Openoffice: Backports to woody
add_backend /debian-openoffice/				\
	$APT_PROXY_CACHE/debian-openoffice/		\
	http://ftp.freenet.de/pub/debian-openoffice/

# ------------- GNOME-2.2: Backports to woody
add_backend /gnome/					\
	$APT_PROXY_CACHE/gnome/				\
	http://mirror.raw.no/

############################## OTHER VARS ##################################
#	Automatically delete old debs when we download a newer one
#	after this many days of the older not being accessed.
#	Comment out to avoid, set to 0 for `instantly' (not recommended;
#	sometimes the new versions are broken
CLEANUP_DAYS=14
#	Once every n days, look through tree to erase any debs which
#	haven't been accessed in that long (eg. obsolete, rarely used, etc).
#	Comment out to disable.
# CLEAN_SWEEP=60
#       Maximum number of versions of each package to keep in cache
#       directory.  Version purging is carried out immediately after a new
#       version is downloaded.
#	XXX Specific number for every package server
MAX_VERSIONS=3
#	Maximum frequency of Packages/etc. updates from back end (minutes)
#	Keep high to speed things up.
BACKEND_FREQ=240
#	Number of seconds for rsync to wait before timing out.
RSYNC_TIMEOUT=20
#	Number of seconds for wget to wait to connect before timing out.
WGET_TIMEOUT=20
#       Uncomment to change the path to wget, or add extra options.  For
#       example, if you are behind a firewall that does not allow active
#       FTP, use WGET="wget --passive-ftp"
#WGET=wget
#       Uncomment to change the path to rsync or add extra options.
#RSYNC=rsync
#	Uncomment to keep stats of successful backend transfers in the log.
#KEEP_STATS=1
#	Uncomment this for debugging messages
# DEBUG=true
#       HTTP/FTP proxy:  apt-proxy uses wget to retreive files.  Wget uses
#       the http_proxy and ftp_proxy environment variables, which can be set
#       like this:
#export http_proxy=http://proxy:8080/
#export ftp_proxy=http://proxy:8080/
 >>

-------------------------------------  Appendix II: etc/apt/sources.list 
(here: pointing to testing)

# __________ EXPERIMENTAL:
#
# deb http://APTPROXY:9999/debian project/experimental/main/binary-$(ARCH)/
#
# __________ UNSTABLE:
#
#deb http://localhost:9999/debian unstable main contrib non-free
#deb http://localhost:9999/non-US unstable/non-US main contrib non-free
#
# __________ TESTING:
#
deb http://localhost:9999/debian testing main contrib non-free
deb http://localhost:9999/non-US testing/non-US main contrib non-free
#
# __________ STABLE:
#
#deb http://localhost:9999/debian stable main contrib non-free
#deb http://localhost:9999/non-US stable/non-US main contrib non-free
# security
#deb http://localhost:9999/security stable/updates main contrib non-free
## Openoffice Backports to woody
## deb http://localhost:9999/debian-openoffice woody main contrib
## Gnome-2.2 Backports to woody
## deb http://localhost:9999/gnome gnome2.2/