When I first start it up, T-Bird 78 uses about 300 MB of memory. During use it steadily increases, reaching 1 GB after about three days. This used to be a problem two years ago (V52) but it was resolved in a newer version (maybe V68, or maybe earlier -- I'm not sure). Now in 78 it's back again. This isn't actually a surprise, given the magnitude of the 78 rewrite, and the difficulty of avoiding memory leaks... REFERENCE INFO 78.2.2 (32-bit) running on Win7 Add-on: Tag Popup 2.1.5 (all my other add-ons are unfortunately not compatible with 78!) 4 POP accounts -- 2 checked every 5 minutes, 2 every 60 minutes No chat accounts No RSS accounts Geoff Walker <edited to remove personal information>