Here is the memory use on my 2011UiAS under 6.27 over the past month and the state it ended up in 11 minutes after restarting on 6.29.1, moments before the router restarted, 100% CPU, memory almost exhausted.
When I installed 6.28 it ran for a few minutes before watchdog-ing because of memory exhaustion, showing the same symptoms.
6.29.1 is also broken: it runs for a few minutes leaking memory slowly, and then suddenly leaks memory (dropping for 95MB free to 7MB free in about 30 seconds) and restarts.
Surely this needs to be fixed?