Rob...
I definitely think you should upgrade to 2.2......check out these release notes from Adobe (particularly the gradient part):
Lightroom 2 Bugs - Fixed
•Images rendered from the Slideshow export process produced a jagged effect on hard edges relative to the quality of normal JPEG export
•Increased the number of characters allowed in Web gallery labels beyond 150 characters
•Catalogs with hundreds of root (top level) folders caused very slow launch times
•Drag and drop to move a subfolder to a different folder showed the incorrect photos in the grid
•Print Sharpening produced edge artifacts in certain conditions
•Density defaulted to 100 percent for initial stroke regardless of position of slider
•The Adjustment brush created blocky, straight edges to brush strokes under certain conditions
•Lightroom could become unresponsive when using the graduated filter under certain conditions
•It was possible to lose the ability to edit an adjustment brush setting after applying a graduated filter with hidden pins
•Turning auto-mask on produced a lag in Lightroom performance in when applying the adjustment brush
•Print to JPEG functionality produced a low resolution image when printing photos with panorama aspect ratios
•Extended characters in a folder name caused Edit in Photoshop functionality to fail
•Smart collection did not respond to changes in custom metadata
Cheers....
Todd in Chicago
Not aware of any problems, just the "if it's not broke, don't fix it" wariness of upgrading programs
