I thought this information may be of use to some of you.
I have a mid 2010 2.53 i5 MacBook Pro 15".
I did the SL upgrade to Lion, and suffered from several of the problems described on this forum. Alas, I made a bootable Lion USB flash drive and did a clean install after formatting my boot drive with Disk Utility. First of all, the install took 1/3 of the time the upgrade took! Now that it's installed, i've put everything back on manually (apps, files, settings etc), no assisted migration. It's a completely fresh start, and now the system is visibly quicker, snappier, more responsive, and improved boot time. Even the diminished battery life seems to have been partially recovered, I reiterate, partially.
Yes, things like Safari memory leaks remain, and minor bugs. I upgraded the MBP from 4GB to 8GB of RAM this AM just for kicks and future proofing, though it really wasn't necessary and I did all of my testing with the original 4GB. Though this was inspired by the fact that Lion does eat a marginally increased amount of RAM, regardless of what anyone tells you, it does.
In conclusion: I'd really recommend doing the clean install of Lion.
(strange side note: I'm only left with a few built in desktop backgrounds after the clean install. All of the SL ones are gone)
I have a mid 2010 2.53 i5 MacBook Pro 15".
I did the SL upgrade to Lion, and suffered from several of the problems described on this forum. Alas, I made a bootable Lion USB flash drive and did a clean install after formatting my boot drive with Disk Utility. First of all, the install took 1/3 of the time the upgrade took! Now that it's installed, i've put everything back on manually (apps, files, settings etc), no assisted migration. It's a completely fresh start, and now the system is visibly quicker, snappier, more responsive, and improved boot time. Even the diminished battery life seems to have been partially recovered, I reiterate, partially.
Yes, things like Safari memory leaks remain, and minor bugs. I upgraded the MBP from 4GB to 8GB of RAM this AM just for kicks and future proofing, though it really wasn't necessary and I did all of my testing with the original 4GB. Though this was inspired by the fact that Lion does eat a marginally increased amount of RAM, regardless of what anyone tells you, it does.
In conclusion: I'd really recommend doing the clean install of Lion.
(strange side note: I'm only left with a few built in desktop backgrounds after the clean install. All of the SL ones are gone)