From Forum Nokia Wiki

ID	KIC000129	Creation date	March 9, 2004, updated April 1, 2004.
Platform	S60 2nd Edition	Devices	Nokia 6600, version 3.42.1.
Category		Subcategory

Keywords (APIs, classes, methods, functions):

Overview

Sometimes when trying to download a big (~200 KB) Symbian Installation file (*.sis) via the Nokia 6600 browser, the browser gives a "Services: unable to perform operation" message and the installation is not successful.

Description

This error occurs occasionally if you have several applications open and try to download big *.sis files. This happens because DocumentHandler saves the file to d:\system\temp and there is not enough space.

Solution

Corrected in software release 4.09.1.