I think they are working seriously on this issue. Now, if they would have planned outages for this purpose, so posters would know to expect a period of instability, instead of random outages and instability--or, perhaps the server is seriously slipping...
I usually look at the announcements for this, and yes Simon is working on upgrading the software. At last use, it finally allowed large fonts on IE7 (before, the large fonts would only work on IE6). And then the site crashed and stayed offline for the balance of the morning...