Okay...
Probably:
1. maintenance of the posts and members
2. upgrading <img src="https://www.ubbcentral.com/boards/images/graemlins/wink.gif" alt="" />
If I wouldn't have touched the vars_X/members files directly, it'd probably be:
1. changing profiles
2. modifying styles
3. maintenance
4. general display settings
5. upgrading
If I wouldn't have disabled cache, clearing cache would've been probably #1.
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