We recently had a fun adventure of debugging indirect XDMCP on our Ubuntu LTS 6.06 (Dapper Drake) servers. The problem was that youcouldn't go from the chooser on one server to logging in on another server,although you could log in to the machine the chooser was coming from.

It turns out that this is broken by default in pretty much every modernLinux distribution, and the culprit is IPv6 support. In fact it makes agood illustration of why adding IPv6 support is not

A periodically annoying limitation of Python properties on instances isthat you cannot remove or replace a property. (You can implement del in your property, but this is not the same thing.)

This restriction exists because properties are actually attributes onthe class, not attributes on the instances. Because of how attributelookup works, you can't even sneak a replacement in through theinstance's __dict__ .

This means that you can't use properties to implement a highly efficient'generate once and

This week, we:

• got 13,022 messages from 240 different IP addresses.
• handled 18,021 sessions from 1,234 different IP addresses.
• received 169,572 connections from at least 5,382 different IPaddresses.
• hit a highwater of 43 connections being checked at once.

Volume is about the same as last week ,although evidently we got a big burst of connections some timethis week.