CREATE TABLE table_2263152_1 (release_date VARCHAR, security_issues VARCHAR, distribution_mechanism VARCHAR)

If the security issues is 99-025 and the distribution mechanism is the Microsoft website, what is the release date total number?
SELECT COUNT(release_date) FROM table_2263152_1 WHERE security_issues = "99-025" AND distribution_mechanism = "Microsoft website"
SELECT COUNT("release_date") FROM "table_2263152_1" WHERE "99-025" = "security_issues" AND "Microsoft website" = "distribution_mechanism"