[Serusers] New MySQL results in aborted connections from SER

I was able to get ser (0.9.6) running with mysql 4.1.16, but upon upgrading to mysql 5.0.21, I am having problems again. MySQL loads fine, as does SER, but when my UA attempts to register with the database, I see these errors throughout my mysql log: [Warning] Aborted connection 109 to db: 'nv_proxy' user: 'nvproxy' host: 'localhost' (Got an error reading communication packets) If I try to make a call, I get a 407 Proxy Authentication Required failure, which I expect. There are no errors in /var/log/messages that indicate what exactly the problem is with my database access, so ser seems to think things are okay. Has anyone seen this before or have any idea what I might have missed in my upgrade from 4.1.16 to 5.0.21 MySQL? Thanks in advance, Steve