logging systems/software

does anyone have any particular favorites for reasonable cost
logging/tracking systems for trouble reports, outage reports, customer
service problems, and complaints (such as might be received about spam
at an abuse address)?

Here's a vote for RUST, the redesign of multireq, out of U of Utah CS.
The direct decendant of NEU's req, it offers a lot of what a genuine
job/trouble-tracking system needs to give to the people that will use
it. It isn't very good for a managerial oversight of the 'call-duration'
style, but for getting things done in-between shifts and distributed staff,
it gets my solid vote.

See ftp://ftp.cs.utah.edu/pub/rust. Current version is RUST v1.0b6pl0,
from May 21, 1997.