This happens most probably because you are installing applications from extras-devel that haven't gone through the process of using the internal memory card to install files.

If you stick to Nokia and Extras repositories then you will get software that has gone through a QA check testing (among other things) that the files installed take as little as possible from the root partition.

I believe we need a explanatory wiki page somewhere to point users in the same situation because the questions is coming quite often. Please don't install software from extras-devel unless you know what you are doing.

See the technical explanation at http://wiki.maemo.org/Documentation/...opt_and_MyDocs

PS: can you please share the thicker apps you had installed to see where we should put our attention first? Feel free filing bugs asking them to use /opt and MyDocs as much as possible as explained in the link above.