It seems that there has not been enough effort to fix bugs in Mapnik. Anyway, I was looking thru the Mapnik bug reports and found a couple bugs that were reported more than a year ago and STILL have not been fixed. Yes, I know that there's never been enough OSM developers, but the fact that there's unfixed bugs reported more than a year ago is just unacceptable. A few bugs I have found were ones that I'm sure many of you have noticed.
*One is the fact that bridge layers aren't rendered correctly for roads other than motorways and motorway_links. This bug report (http://trac.openstreetmap.org/ticket/1931) was created 19 months ago! Its the oldest one I've found regarding this issue, and I'm surprised this issue STILL hasn't been fixed.
*Another bug I've found is the fact that river names aren't displayed for rivers, even though the name was entered in the name=* tag. This bug report (http://trac.openstreetmap.org/ticket/2514) about this issue was opened 13 months ago, and this issue still isn't fixed.
I'm sure there's other rendering bugs that are this old, but these are the ones that I've found are most annoying. So if you have any programming experience, PLEASE lend your efforts to fix these bugs! If you have any spare time, try and fix these bugs. Your efforts will be appreciated
PS: PLEASE DO NOT comment saying "fix it yourself!" I don't have any programming experience and if did I wouldn't have created this diary entry in the first place.