If you use IRC at all, the next thing I'd try would be asking in the support channel - someone there will know what else to try:
Server: ircd.livejournal.org
Ports: 6667-6669, 7000
Channel: #lj_support
If you've never used IRC, there's a web client at http://www.mibbit.com/

LJ also have a twitter account, but I'm not sure how often they check replies to it, so that might also be worth a try.

Edit: Just saw Azz's reply, and yeah, email is better still, I'd forgotten about that.