I have been using the new ConfigurationOfPharo to build my own dev images. This install OCompletion and so far has been wonderful. I have installed OCompletion-RomainRobbes.52 and have been working full time for two weeks. But today the completion is so slow. To the extreme of not being able to work seamlessly. I type a character and the machine slows down, the images stops responding sometimes for 10 seconds. I considered disable it but that isn't a solution, as I really like it. The problem is that is very slow now. It wasn't slow the previous weeks. I tried: OCompletionTable default reset. Save and quit the image. Nothing. Then OCompletionTable default reset. OCompletionTable initialize. And in the FillTheBlank I put: Kernel* Collection* MyPackage And after that I have 251 entries in the table. Then save and quit. Nothing. I trigger a garbage collector and nothing. When I do an Alt+. in the slow down I get a debug window on: SystemDictionary(Set)>>do: and SystemDictionary(Dictionary)>>hasBindingsThatBeginsWith: where SystemDictionary tally is 3561 so I think that is searching the full images symbols for some match and that is slowing things down. Any ideas? I know that this isn't verifiable but the slow down is very real. Further research: The method I am editing is a very long one that copied from other similar and I am changing the relevant parts. So there are a few undeclared temp variables that I have not changed. Because of this I haven't saved the new method. Maybe that is slowing the completion. Lets try other small method for completion.... yes, is fast in small method. Lets try on a big but saved method...YES, is fast too. So it appears that OCompletion slows down when you are editing a big unsaved with a lot of undeclared temp variable names in it. Let me fix the undeclared temp variables and save the failing method just to verify....yes yes yes, that was. Well, thanks for listening, you know, when you talk about your problem with someone else, you sometimes find the elusive answer. Thanks dear Pharo listeners! Cheers -- Miguel Cobá http://miguel.leugim.com.mx