Alec,
thanks for reply. I use browsers available on Linux and OS X. Indeed there are Javascript errors. Error from Opera and Chrome on Linux is shown below.
Opera:

[2011.05.12. 11:50:48] JavaScript - https://myhost.my.domain/?_task=addressbook
Event thread: DOMContentLoaded
Uncaught exception: Syntax error, unrecognized expression: [id=rcmrowZGM9c2V0cyxkYz1sdg==]
Error thrown at line 23, column 6375 in <anonymous function: a5.error>(bl) in https://myhost.my.domain/program/js/jquery-1.4.min.js?s=1297065915:
    throw"Syntax error, unrecognized expression: "+bl
called from line 23, column 5578 in <anonymous function: a5.filter>(bw, bv, bz, bp) in https://myhost.my.domain/program/js/jquery-1.4.min.js?s=1297065915:
    a5.error(bw)
called from line 23, column 1349 in <anonymous function>(bq, bl, bt, bu) in https://myhost.my.domain/program/js/jquery-1.4.min.js?s=1297065915:
    by=bx.expr?a5.filter(bx.expr,bx.set):bx.set;
called from line 23, column 26396 in <anonymous function: a5>(by, bq, bt, bx) in https://myhost.my.domain/program/js/jquery-1.4.min.js?s=1297065915:
    return bl(by,bq,bt,bx)
called from line 23, column 32597 in <anonymous function: find>(a4) in https://myhost.my.domain/program/js/jquery-1.4.min.js?s=1297065915:
    a.find(a4,this[a7],a6);
called from line 16, column 2491 in <anonymous function: init>(bA, bE, bD) in https://myhost.my.domain/program/js/jquery-1.4.min.js?s=1297065915:
    return(bE||bD).find(bA)
called from line 16, column 136 in <anonymous function>(bA, bB) in https://myhost.my.domain/program/js/jquery-1.4.min.js?s=1297065915:
    return new bf.fn.init(bA,bB,bd)
called from line 320, column 1 in rcm_addressmenu_init(row) in https://myhost.my.domain/plugins/contextmenu/contextmenu.js?s=1303071309:
    $("tr[id=" + row + "]").contextMenu({
called from line 511, column 96 in <anonymous function>(props) in https://myhost.my.domain/plugins/contextmenu/contextmenu.js?s=1303071309:
    rcm_addressmenu_init(props.row.id);
called from line 1, column 12714 in <anonymous function: triggerEvent>(a, f) in https://myhost.my.domain/program/js/common.js?s=1304326005:
    b=d.func.call?d.func.call(d.obj,f):d.func(f)

Chrome:
  1. Uncaught Syntax error, unrecognized expression: [id=rcmrowZGM9c2V0cyxkYz1sdg==]
    5. a.fn.extend.findjquery-1.4.min.js:23
    6. a.bf.fn.bf.initjquery-1.4.min.js:16
    8. rcm_addressmenu_initcontextmenu.js:320
    9. (anonymous function)contextmenu.js:511
    10. rcube_event_engine.triggerEventcommon.js:1
    11. init.contact_list.row_initapp.js:1
    12. rcube_list_widget.init_rowlist.js:1
    13. rcube_list_widget.initlist.js:1
    15. (anonymous function)/?_task=addressbook:218
    16. a.bf.extend._Deferred.bA.resolveWithjquery-1.4.min.js:16
    17. a.bf.extend.readyjquery-1.4.min.js:16


BR,
Ivars
 
To the optimist, the glass is half full.
To the pessimist, the glass is half empty.
To the engineer, the glass is over-sized for optimal containment efficiency.
To the optimist, the glass is half full.
To the pessimist, the glass is half empty.
To the engineer, the glass is over-sized for optimal containment efficiency.

On 2011.05.12. 11:40, A.L.E.C wrote: 
On 12.05.2011 10:27, Ivars Strazdiņš wrote:

Hi there,
I have RC with LDAP as 'address book only' running on Gentoo. Perfect.
Now I migrated server to Ubuntu with pretty much the same configuration 
and everything works fine except that Address Book pane is completely 
read only. All buttons, including navigation buttons are grayed out. I 
have more than one page of addresses and I cannot even navigate to see 
the latest entries. And I cannot select any of addresses :?

Even when addressbook is readonly for some reason, the
navigation/selection should work. What browser are you using? Any
javascript errors in it?