Just a short ride today to test out the new tires, a Racing Ralph Evo at the front and a Racing Ralph SnakeSkin at the back, both sized 29x2.25". Typically, it started to rain just as I went out and after one hour it was wet enough to get really slippy, especially with the rear tire, which was completely new out of the box. The Racing Ralph is generally not that grippy in wet weather and when it is completely new it is even worse. The Racing Ralph does roll very well, however, and has a nice volume. The SnakeSkin version should have sidewalls that should be durable enough, something which the Evo version does not have, at least not as a back tire.
I also got the camera, a Canon S90, back from warranty repair after a week. A few days after i bought it, I noticed that in certain light situations, an unsharp and light spot appeared near the middle of the picture, visible e.g. here. The repair shop switched the optics assembly to another one and recalibrated the camera. The problem seems to be solved now. It seems that Canon has some problems with their quality control, which is not acceptable on a camera in this price class.