I would appreciate if someone could help me solve my leaking problem. The leaks occur at: aImage, aCategory, aDescription, category and categories. I release them in dealloc, but obviously that is not sufficient:

-(void) readListFromDatabase:(char *) sqlStatement {
    // Setup some globals
    databaseName = @"mydatabase.sql";

    // Get the path to the documents directory and append the databaseName
    NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDir = [documentPaths objectAtIndex:0];
    databasePath = [documentsDir stringByAppendingPathComponent:databaseName];

    // Setup the database object
    sqlite3 *database;

    // Init the categories Array
    categories = [[NSMutableArray alloc] init];

    // Open the database from the users filessytem
    if(sqlite3_open([databasePath UTF8String], &database) == SQLITE_OK) {
        // Setup the SQL Statement and compile it for faster access
        sqlite3_stmt *compiledStatement;
        if(sqlite3_prepare_v2(database, sqlStatement, -1, &compiledStatement, NULL) == SQLITE_OK) {
            // Loop through the results and add them to the feeds array
            while(sqlite3_step(compiledStatement) == SQLITE_ROW) {
                // Read the data from the result row
                aImage = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 0)];
                aCategory = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 1)];
                aDescription = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 2)];

                // Create a new category object with the data from the database             
                category=[[Category alloc] initWithName:aImage category_name:aCategory description_text:aDescription];

                // Add the category object to the categories Array
                [categories addObject:category];

                [category release];
            }
        }
        // Release the compiled statement from memory
        sqlite3_finalize(compiledStatement);
    }
    sqlite3_close(database);

}

- (void)dealloc {
    [databaseName release];
    [databasePath release];
    [categories release];
    [aImage release];
    [aCategory release];
    [aDescription release];
    [category release];


    [super dealloc];
}