10. Other finance income/(expense), net

In CHF’000 Note 2007 2006
Interest income 15 600 13 936
Net gains/(losses) on foreign exchange related derivative financial
instruments not qualifying for hedge accounting
1 423 1 916
Net foreign exchange transaction gains/(losses) 12 -13 489 -182
Impairment losses on available for sale financial assets - -6 623
Others 1 154 -417
4 688 8 630

Change in fair value of kCHF 22 (2006: kCHF 0) for available-for-sale financial assets were recognized directly in equity while kCHF 0 (2006: kCHF 0) were removed from equity and recognized in the income statement. Foreign exchange derivative financial instruments are classified as held for trading financial instruments. Change in fair value of held for trading financial assets amounting to kCHF 1 423 (2006: kCHF 1 916) are disclosed under Net gains on foreign derivative financial instruments not qualifying for hedge accounting.

Foreign exchange derivative financial instruments are classified as held for trading financial instruments.

Change in fair value of held for trading financial assets amounting to kCHF 1 423 (2006: kCHF 1 916) are disclosed under Net gains on foreign derivative financial instruments not qualifying for hedge accounting.