I work with a non profit and we recently (this week) got a new ASA-5505 to do general firewall and VPN (remote network access via IPSec) tasks. The installed firmware is V7.2(4). Seeing that the latest firmware is 8.3(1), is there any reason to stay with 7.2(4)? Generally I'd update to a more recent version without too much thought (provided there are no reports of major bugs), but the fact that this just came from the factory with 7.2(4) has me wondering what the reasons are to stick with that release. The 5505 does have 512MB of RAM, so hardware capabilities do not seem to be an issue.