My company is running our content through K2 on Joomla 1.5.26. We were hacked roughly 60 days ago & though our website is back up & running there is a tremendous amount of Spam comments infiltrating our site (this was never a problem before the hack). CAn anyone recommend (other than captcha) any anti-spam software, K2 updates, or system setting I can use to help us out. (sidenote: our web development company went out of biz & have no one here with Joomla experience). Thanks for your help in advance.

You could setup Akismet to work along with captcha. K2 v2.6.7 provides this option. You can learn more about how Akismet works here: akismet.com/how/