by Dr G on Sat Jun 04, 2011 10:29 am
It is a rolling release. However, it may not be rolling as fast as you might prefer.
As the user, you need to decide what you want. Do you want the slower release schedule that characterizes distributions based on debian-testing, or do you want something faster (e.g., Arch). Faster may sound interesting, but it's also closer to the bleeding edge (it requires, at a minimum, a much greater willingness to get dirty).
Those (like me) who are better suited to LMDE, recognize that we have only limited time to maintain our systems (I am not in an IT related field), and therefore are willing to trade off rapid development in favor of system stability. For those apps that I need/prefer to keep more current, I dip into sid. Risky? Of course. Especially if you don't take extreme care (my sid dipping is limited to Chromium). In fact, I've been so pleased that I've moved multiple personal systems to LMDE (one fairly dated HP laptop, one somewhat newer Samsung netbook, and my year old ASUS laptop). All have proven rock-solid stable, despite their very disparate nature.
Please note, the above is not meant to imply that LMDE is an install it and forget it tool. . . but, it certainly seems to be approaching that level of stability.
By the way, with LMDE I've also set my updates to levels 1 - 5 on all 3 systems and not been appreciably bitten. If that sounds risky to you, I suggest you consider Mint 11. It's not a rolling release, but the concept of a rolling release is still fairly young. I'm not aware of any rolling release that does not require some maintenance. Still, it's more convenient than the 12 or 6 month reinstallation path, and far less hassle than the daily virus/malware update (that never really secures your system anyway).