Where’s the debt crisis in Silicon Valley? The knock-on effects are all too real, but frozen credit markets have had little direct effect on business operations, aside from possibly scotching the debt-fueled sales of Alltel and Nextel. That’s because technology companies are run by paranoid sorts who like to keep large cash reserves, in case some upstart renders their market obsolete. In good times, activist shareholders whinged about their parsimonious habits, but the cash hoarders are now sitting pretty — and could be set for acquisition binges.

So who’s got cash on hand? Here are the 10 richest tech companies, from a Yahoo Finance screening. (I left out companies, like IBM, whose cash was matched by equally outsized debts.)

China Mobile, $31.0 billion
Cisco Systems, $26.2 billion
Microsoft, $21.2 billion
Apple, $20.7 billion
Google, $12.7 billion
Intel, $12.0 billion
Nokia, $10.8 billion
Dell, $9.0 billion
Motorola, $7.2 billion
Taiwan Semiconductor, $7.0 billion