After a series of upgrading on my PowerBook: Trac 0.9.6 to 0.11dev Python 2.4 to 2.5 Subversion 1.3.2 to 1.4.2 SQLite 2.8.x to 3.3.5 my Trac stopped working. The tracd that comes with Trac works fine, but mod_python under Apache 2.0.58 reports a serious problem: [Thu Feb 01 08:49:14 2007] [notice] child pid 388 exit signal Segmentation fault (11) My Trac database has been upgraded to SQLite 3. I've also recompiled mod_python a few times, with different options each time. Still Segmentation fault. As a last resort, I inserted a bunch of apache.log_error into Trac source code to nail down the line at fault: cnx = sqlite.connect(path, detect_types=sqlite.PARSE_DECLTYPES, check_same_thread=sqlite_version < 30301, timeout=timeout) which is located at SQLiteConnection.__init__ in trac/db/sqlite_backend.py . This is how sqlite got imported: try: import pysqlite2.dbapi2 as sqlite ha...