There are a few known issues with Grubconf, which are features that have not yet been implemented. These are not bugs, but known incompatabilities or unsupported features.
For a complete list of known issues, consult this Forum.
Grubconf only fully supports Linux and Windows OS types. Other OSes will be considered type OTHER and can still be configured with Grubconf, but not to the same degree as fully supported OSes. If an OS was not added by grubconf it will not be able to classify the OS unless the title contains "linux" for a Linux OS or "win" for a Windows OS (this is case-insensitive)
Under rare circumstances when attempting to access the manual from the help button gnome-help will cause a segmentation fault. This is not a problem with grubconf, but with Yelp (the gnome- help viewer) and/or Gnome libraries. The cause of this is not yet completely known but appears when gnome is compiled with aggressive C flags and Yelp is executed as root. If you experience this please email email@example.com with your version of Gnome, any compilation flags that have been used, and any extra system information you can provide (like distribution).
When using devfs in your kernel, you must be running devfsd for GrubConf to successfully detect partitions