We have a monthly delay, because ACM ICPC was held in Poland and everyone were busy at that time.
Next classess will be held on 25.05 at 17:00 UTC (Time in your city http://bit.ly/KLG8Lh), freenode IRC chat (webchat.freenode.net), channel #ubuntu-classroom
Here is the link to notes: https://docs.google.com/document/d/1Okbul4AIzQTR4CVGLcx-dmIXkdToNvLiJkIZurxNB8Q/edit