Total time from boot into install disc, install Gloria, download updates, and restore personal data from MintBackup archive..... Fifty minutes!
Generally I'm very pleased. I do have the sluggish Compiz issue and Firefox seems to be a greater memory hog than in Elyssa. CPU usage is way up from Elyssa, though, sitting around 12 - 20% usage as opposed to 2 - 7% in Elyssa, under the same usage. According to top and the system monitor, the other culprit seems to be PulseAudio. PulseAudio was broken in Hardy/Elyssa and would freeze my Elyssa system consistantly. I used to work around it by killing the PulseAudio process and running my system sound with ALSA, got much clearer sound that way too, not crackly and weak. I have crackly, weak PulseAudio sound again but it appears that PulseAudio is unkillable in Gloria (darnit!
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On the plus side, no need to install SMB4K! - the Network function works now! Unlike a lot of Intel graphics users, although I have sluggish Compiz, I do have smooth video and Flash, including smooth YouTube. Generally and overall, I'm very happy with Gloria. I won't settle in too completely though, I want to give the 64bit edition a whirl on this machine, when it comes out