During this time, we received some reports from users who were unable to post entries or comments, or in some rare cases, being unable to access LiveJournal entirely. We regret that this had happened -- we try to minimize the amount of legitimate traffic affected -- but it was an unfortunate consequence of making sure that the site was stable for the majority of users.
At this time, all services are back to normal. We continue to monitor LiveJournal's performance and will address any problems as soon as they arise. Apologies for the inconvenience caused by this problem, and thank you for your patience as we worked to resolve it.
UPDATE (May 31): We're experiencing another bout of these problems, and we're working to get them resolved as soon as possible. Again, we apologize for the inconvenience caused by this.