... I realized, was uploading to much GPS traces... My crontab was set to "*/30 * * * *" (i.e. every 30 minutes), so I decided to change the interval to two hours: "* /2 * * *" I'm sorry! :-/ It was before my first coffee. So now, it's disabled, I'll re-enable it when my queue is empty.

Another strange issue which ran my way is that Tiles@Home complained about the RAM on one of my machines (detailed outpup below). Well, 4 GB should be enough on a machine wich is nearly idle and just uses 20 MB of its swap area. My BSD box just has 2 GB, t@h never said a word about it. Strange strange. I believe, it has something to do witch my freshly installed NIS, indeed I forgot to change some permissions in the t@h working directory.
Now as promised the detailed log:
----------------snip----------------
[#53 0% Preproc] Downloading: Map data to /mnt/sda3/tilesAtHome/tmp/tmp/data-11113-1-7.osm (slice [#53 0% Preproc] Downloading: Map data to /mnt/sda3/tilesAtHome/tmp/tmp/data-11113-1-8.osm (slice [#53 0% Preproc] Downloading: Map data to /mnt/sda3/tilesAtHome/tmp/tmp/data-11113-1-9.osm (slice [#53 0% Preproc] Downloading: Map data to /mnt/sda3/tilesAtHome/tmp/tmp/data-11113-1-10.osm (slice 10 of 10)...
[#53 0% Preproc] Checking for UTF-8 errors in /mnt/sda3/tilesAtHome/tmp/tmp/data-11113.osm... [#53 100% tile] Finished 2147,1444 for layer tile
[#53 0% maplint] Running maplint... sh: tmp.11113: Permission denied
ERROR
The following command produced an error message:
nice -n10 "xmlstarlet" tr maplint/lib/run-tests.xsl /mnt/sda3/tilesAtHome/tmp/tmp/data-11113.osm > "tmp.11113"
Debug output follows:

Additional info about the Error(s):

[#53 0% maplint] Creating tags from maplint... ERROR
The following command produced an error message:
nice -n10 "xmlstarlet" tr maplint/lib/convert-to-tags.xsl tmp.11113 > "/mnt/sda3/tilesAtHome/tmp/tmp/data-11113-maplint.osm"
Debug output follows:
| warning: failed to load external entity "tmp.11113"
| unable to parse tmp.11113

Additional info about the Error(s):

[#53 0% maplint] Transforming zoom level 12 with or/p... ERROR
The following command produced an error message:
nice -n10 perl orp.pl -r /mnt/sda3/tilesAtHome/tmp/tmp/map-features-11113-z12.xml -o /mnt/sda3/tilesAtHome/tmp/tmp/output-11113-z12.svg-temp.svg
Debug output follows:
| Ran out of memory for input buffer at /usr/lib/perl5/XML/Parser/Expat.pm line 469.

Additional info about the Error(s):

[#54 0% jobinit] Doing tileset 2192,1372 (zoom 12) (area around 50.930730,12.700195)
[#54 0% Preproc] Downloading: Map data for tile,maplint,captionless to /mnt/sda3/tilesAtHome/tmp/t[#53 0% upload1] Uploading /mnt/sda3/tilesAtHome/tmp/tmp//uploadable/1217913796_20214_0_tile_tiles[#54 0% Preproc] Checking for UTF-8 errors in /mnt/sda3/tilesAtHome/tmp/tmp/data-11113.osm...
----------------snap----------------
Did you discover the "permission denied"? :-)