Ask HN: Is your Gmail spam filter too aggressive?

I've been alerted by one of my clients who uses Google Apps that they are missing a lot of emails. I went looking and found all of them in the spam folder. This prodded me to check my Gmail spam folder and it really had a lot of false positives in there. A quick Twitter search reveals many people who noticed the same behavior starting around the beginning of May.

Have you noticed the Gmail spam filter being too aggressive as well?